Thursday, August 30, 2012

Solving a Warbler Mystery

Well,after a long layoff, I'm finally back. Over the last several months I've spent some time out of town working and doing things just not associated with birding. It was always my plan after the big year to take some time off and focus on non-birding related activities but now that fall migration is in full swing, I'm back. 

I was prompted to write this article by a birding friend of mine who sent me several photos of a 'mystery' warbler. Mostly the bird was a mystery because the photos were quite blurry,but this is often the case with fall warblers, especially the more furtive species. So, my purpose for writing this is twofold. Firstly, I'll seek to identify the mystery warbler and in doing so I'll provide reasoning to support my conclusion. Along the way, I'll also try to shed some light on fall warbler identification in general and outline a basic approach for tackling such problematic birds.

 So lets get right to it. Below you will see several photos, none of which are clear and none of which show the entire bird. In order to even begin to identify this bird we need to put the pieces of the puzzle together. I'm not sure the identification would have been possible if any one of these photos were missing,since all of them provide vital clues. Lets look at each photo separately and work towards an identification, ruling some species out along the way.
At first look this photo might useless,since its just a blur. While it doesn't show any plumage detail it does give us some critical information about the birds general shape,posture and color.The bird appears to be greenish above, rich yellow below and having a grey head. Its a profile view and no wing bars are visible, but the photo is so blurry that I'm not sure they would show up, so this is at most circumstantial. I think the large yellow spot on the rump is an out of focus leaf or some type of reflection,since it intersects the wing and just doesn't look quite right.Here are the key features to take from this photo

- green above
-yellow below
- greyish head
- upright posture
 -probably lacking wing bars

 Using this list we can already rule out most species and create a list of possible species including;
1) Mourning Warbler
2) Connecticut Warbler
3) Macgilivary's Warbler
4) Nashville Warbler
5) Orange-crowned Warbler
6) Magnolia Warbler

 So let's keep these possibilities in mind as we move to the next 3 photos.




This photo adds some more pieces to the puzzle.In this photo we can clearly see the bird does indeed have a olive/grey hood. It also appears to have a broken eye ring, with a darkish line through the eye. The photo is still pretty blurry so again this feature is only useful in combination with other characters. We can also see what looks like an odd yellowish spot between the eye and the bill. This is quite strange doesn't really seem to mesh with any of the possibilities we outlined above!Also, worth noting is the yellow undertail coverts and a thickish looking all green undertail,lacking tail spots.Also, the bill appears somewhat thick (as warblers go),but this can be misleading in a blurry photo,but it sure doesn't look needle thin.

 Once again the bird is standing quite upright and to me at least the legs appear as though they are pale.Leg color is a critical detail and useful in the separation of some very similar species

.So,to recap we know that the mystery bird is; - green above -yellow below - greyish head - upright posture -probably lacking wing bars - has a broken eye ring with what appears to be a dark eye line - seems to have an odd yellowish spot in the lores or supra loral area - yellow undertail coverts - green undertail feathers-lacking tail spots


When I first saw this photo it confused me. The bird seems to have a pale supercilium and a dark eye line. This didn't fit with the species I had in mind at the time,until I gave it some thought.The yellow throat was a key piece of information though. In fact, after seeing the first two photos, this photo that initially confused me pretty much clinched the identification. So, to the above list we can add what looks like a pale supercilium and a yellow throat.



Again at first look this photo might seem useless. Actually it took me a second to even realize what I was looking at when I saw this photo initially. Then after a couple of seconds the birds head revealed itself and if you look hard enough you can see the broken eye ring,at least on the bottom of the eye.That's pretty much all I took from this photo.

Now that we've gathered all our evidence and created a list of possible suspects its time to start narrowing things down a bit. To aid this process we'll make use of some background information as well. I'll break down the list one by one until we arrive at the identification.

 1)Connecticut Warbler- There are three records for Newfoundland, all in late September. This bird is rarely seen in the east before mid to late September, this is a big strike against this bird.If that wasn't enough the lack of a thick,bold eye ring and the presence of a bright yellow throat rule this species out.

 2) Macgillivary's Warbler- Western Species that is extremely rare in the east. When it does appear it generally does so in late fall. There aren't any records for Newfoundland. While this makes this species unlikely it isn't enough to rule it out. However,I'd expect even an immature Magillivary's to show a much more defined split eye ring and should not show a yellow throat. The adults of course have a dark grey,backish throat and the immatures have a whitish throat, but never yellow.

3) Nashville Warbler- a very uncommon breeder in Newfoundland, but a few do turn up every fall. The greyish head, green above yellow below with yellow throat do match this species, so maybe that's it! Not so quick. Nashville Warblers have a VERY bold eyering,they also have black legs and a very fine, pointed bill.They also,never show any kind of dark eye line. So you can check that off too.

 4) Orange-crowned Warbler- This bird could superficially resemble an OCWA. The greyish head, with split eye ring, dark eye line actually are very good OCWA characters, however that's where the resemblence ends. Orange-crowned Warblers are late migrants and the few that do turn up in Newfoundland every year do so usually in October or later, maybe early as late September. Again its not impossible that one could turn up here in August, but this bird is just too bright below for an OCWA. Also the posture doesn't look quite right and the apparent pale legs are also wrong for this species...moving on.

 5) Magnolia Warbler- A common breeder and routine in late summer/fall in eastern Newfoundland,so a good start. However,its just clear that this bird is not a Magnolia Warbler. We have to look no further than the under side of this birds tail to give us all the information we need. Magnolia Warblers have white under tail coverts and a unique black and white pattern on the under side of their tail feathers. This bird clearly has yellow under tail coverts and green under side of the tail feathers.So after all of this deducing, we are left with a single possibility, Mourning Warbler.So lets consider that.

 Mourning Warbler is a common breeder in parts of Newfoundland and a patchy breeder in the east. They are seen with some regularity in the alder beds on of eastern Newfoundland in late summer and the first half of September. As well, all of the characters list above fit we will with this species. It is green above, yellow below and lacks wing bars. It has yellow under tail coverts and green underside to its tail feathers,lacking tail spots. It spends much time walking and often has an upright posture,it has pale pink legs and as other members of the genus Opornis, it has quite a thick bill for a warbler.As well, immatures of this species do show a moderate,split eye ring, with a dark eye line. There is also often a yellowish line running above the lore,in immatures,which is somewhat reminiscent of Kentucky Warbler. In a couple of the photos above there is a yellowish area in front of the eye and I think its explained by this feature, but looks larger because the photo is blurred. Look at the web photo below for an example of what I'm referring to. This is not a character that you see talked about in field guides, but is clearly present.



As you can see there is much to consider when making these identifications and while it took quite some time to present this reasoning here,the exact same method is employed, to make split second identifications in the field. The more you practice the quicker you get at making such evaluations on the spot.

If you would like to get some insight into using this type of reasoning to identify fall warblers, I'll be holding a fall warbler identification workshop on either Sept 8th or 9th. It will be 3-4 hours and will include my usual power point slide show. I'll be breaking down all the look alike and confusion species. Space is limited and the registration fee is $50. If you interested contact me at dave.browneATgmail.com to reserve your spot.

Tuesday, December 13, 2011

For the Larophiles....

I was just browsing some of the blogs I follow and I happened upon one from Nick Bonomo from CT. It will seem a very familiar conversation for any larophile. It made me think back to the days when I looked forward to spending Christmas day at the dump....

I've got an idea for a sequel that I might post later this week.

http://www.shorebirder.com/2010/11/gulling-at-landfill.html

Wednesday, December 7, 2011

Some Thoughts on the Separation of "white-winged" Kumlien's Iceland Gull from Nominate g.glaucoides Iceland Gull

This is an article I've been threatening to write for some time. So now finally, at 12:01 tonight I decided to sit down get to work. Before I get into any discussion I should advise that I've never been to Greenland or Iceland and have no real life experience with g.glaucoides in their true range.So, feel free to take what I say with a grain of salt, should you decide to keep reading at all.Having said that I've seen a hell of a lot of Kumlien's Iceland Gulls, and have a good feeling for the limits of variation within that subspecies, if you want to call it that. Over the years, I have looked at every photo of g.glaucoides I could get my hands on, and and photographed a number of individuals in Newfoundland, some of which I will share in this article.

Throughout the course of this article I will discuss the variation in Kumlien's Iceland Gull and compare that to (what I think of) g.Glaucoides. I will discuss criteria for separating these two subspecies (based on a Newfoundland, or perhaps just my, perspective). I will limit my discussion to adult birds only,since I have not seen any reliable way of separating juveniles and fist winter birds. As birds get into their second, and especially third winter, they become easier to separate but as I said, I will concentrate on adult birds. I will give particular attention to those Kumlien's Gulls that could present a possible caveat for those wishing to identify g.glaucoides. Alternately, this may be of use to European birders, who endeavor to identify out of range Kumlien's Gulls.

Newfoundland seems to host the lion share of the winter population of Kumlien's Gulls.While they are very well represented throughout the Canadian Maritimes,with some into the mid west and Great Lakes and down the eastern seaboard into New England, I doubt there is anywhere else on earth one could witness the numbers and diversity of Kumlien's Gulls that we see in St.John's, Newfoundland in winter. This combined with the fact that I just don't have much else to do in winter has afforded me the opportunity to gain an intimate knowledge of Kumlien's Gulls over the last 10-12 years.

Over that time I've witnessed a number of characters that seem to separate Kumlien's from g.glaucoides. Among the more important of these are,

1) mantle shade- Kumliens slightly paler than smithsonianus HERG while g.glaucoides is as pale a Glaucous Gull or paler.

2) eye color- Kumliens can vary from very pale to very dark but ALWAYS has at least some dark peppering in the iris while g.glaucoides ALWAYS has a fully pale eye without dark peppering ranging pale to creamy yellow reminiscent of Glaucous Gull.( I'm open to revising this statement, if someone can provide me with conflicting evidence)

3) Primary coloration- Kumliens varies from having dark marking on as many as 6 outer primaries (though usually 4) to pure white wing tips with dark pigment restricted to the outer web of p10 (sometimes very faint) g.glaucoides never has dark markings or any kind in the wings as adult-- always pure white tips and lacking any dark marbling in the outer web of p 10.

4) structure- On average Kumlien's seem to appear larger billed,with less rounded head. Appear more menacing and bulky overall. The smallest g.glaucoides can appear very dainty with quite small, Dove-like heads.

While there may be other differences,I believe any Iceland combining all of the above characters, one way or the other, can be safely assigned to subspecies. Any Iceland Gull that appears extremely dainty, with a clear yellow eye, pure white wing tips and mantle color matching GLGU is probably, if not certainly a g.glaucoides. At times there are birds that have 3 of 4 of the above characters and are suggestive of g.glaucoides but I choose to leave these birds unidentified.




Example of g.glaucoides- like Kumlien's Gull. Structurally very reminiscent of g.glaucoides with smallish bill, rounded head, creating a dainty impression. Wings apparently pure white,lacking any dark markings. However, note mantle coloration same as surrounding Kumliens Gulls and dark eye. What does this mean??


MANTLE SHADE

Kumliens Gulls have a mantle shade just lighter than smithsonianus Herring Gull, but noticeably darker than any Glaucous Gull. In direct comparison with glaucoides Kumlien's appears at least a shade darker. See photos below.


Presumed g.glaucoides,St.John's, Newfoundland,December. Compare to Herring Gull on left and Kumliens Gulls on right and behind. Also note similarity in Kumlien's and Herring Gull mantle shade. Note this individual shows all four key features mentioned above, pale mantle, pure, pale eye,lacking dark peppering, pure white wings. Structurally this bird was a little bulky, so probably a male.


Presumed g.glaucoides, late January, St.John's, Newfoundland. Compare with Kumlieni to the left. There is less contrast between the primaries and mantle in glaucoides then even the whitest winged kumlieni.


EYE COLOR

Eye color is among the most variable of all Kumlien's traits. However, in my experience there are limits. There seem to be a couple of potential rules among the variability.

1) While KUM iris' can appear completely dark to completely pale,there is ALWAYS at least some dark peppering in the iris.

2) In adult g.glaucoides there is NEVER a large amount of dark peppering in the iris. The adult eye color is usually a clear creamy yellow and mostly lacking the more amber and golden tones shown by pale eyed Kumlien's. From what I can see most of the time it lacks any dark spots in the iris whatsoever,but perhaps some can show a few dark specs.

Below are a series of photos displaying the range of eye color possible in Kumlien's Gull with a few g.glaucoides thrown in.














3rd winter g.glaucoides,Newfoundland,January. Note the creamy-yellow color lacking dark peppering.





Adult Glaucous Gull, Newfoundland, January. Note similarity to the g.glaucoides above.

PRIMARY COLORATION

This is actually quite straightforward. While Kumlien's Gull can pretty much range from primary patters closely matching those of Thayer's Gull to almost pure white winged as in g.glaucoides. The whitest winged Kumliens have only a very small amount of dark coloration (sometimes limited to light gray marbling) on P10.

In contrast to Kumlien's, adult g.glaucoides NEVER has any dark coloration in the primaries.

Three dark-winged Kumlien's Gull's.




White-winged Kumlien's Gulls

While the above birds would never be mistaken for g.glaucoides there are some more confusing individuals. While some Kum's have dark marking on the outer 5-6 primaries ( usually grayish) there are others that can appear completely pure, white-winged. When you find an Iceland Gull that seems to lack any dark markings in the primaries, its important to remember the other criteria that distinguish Kumlien's and g.glaucoides, such as mantle shade and eye color. Then, if possible scrutinize the wings as closely as possible looking especially for any signs of darker markings on p10,mainly on the lower 2/3rd's of the feather in the outer web. Some examples of pale winged Kumlien's below.








STRUCTURE

Structurally Kumlien's can be quite variable. In general it has a smallish billed and more round headed (less sloping forehead)appearance when compared to Herring Gull. This creates a much more gentle expression and a more overall dainty feel to the bird. Among Iceland Gulls g.glaucoides tend to have an even more dainty appearance than Kumliens, often being shorter bill and having a steeper forehead. I don't have a complete understanding of the structural variability in g.glaucoides, but the individuals I've seen in Newfoundland have all been very short-billed round headed individuals. I'm sure there is much overlap with Kumlien's so this is just an accessory feature to be used along with mantle shade, eye color and primary coloration.


g.glaucoides Iceland Gull February, Newfoundland

g.glaucoides, Iceland Gull, January Newfoundland.
g.glaucoides Iceland Gull, January, Newfoundland. Note the steep forehead and very rounded crown, along with short bill creating gentle expression.


This article is not meant to be a definitive work on the separation of these two subspecies, but rather a discussion of some of my observations here in Newfoundland. As I continue to get a better grasp on the potential variation that exists in g.glaucoides I hope to update this article.We're still learning more about these birds every day!For now I'll leave you with one last photo that serves to accentuate the extreme variation found within this species.



Two Kumlien's Gulls, February, Newfoundland. These two individuals nicely display the extreme variation in primary coloration that exists within this species.

Saturday, December 3, 2011

2nd Winter Thayer's Gull??

Given the extreme variability we witness in Kumliens Gulls in Newfoundland, "real" Thayer's Gulls are extremely hard to pin down. I found this bird three days ago feeding at a sewage outflow with a few hundred Kumlien's Gulls. There are Herring Gulls and Greater Black-backed Gulls in the harbour but they rarely visit the sewage outflow. This bird was feeding among Iceland Gulls and feeding in a similar fashion, nervously pecking at the surface of the water. It was often in the middle of the action and aggressive. While generally the challenge here is to determine whether there is Kumlien's influence, the challenge with this bird seems to be differtiation from Herring Gull. Below I have a series of not great photos but hopefully it will be enough for those with extensive experience with Thayer's Gull. There were a few 2nd winter Kumlien's Gulls that looked very similar this bird but the wings were always paler with more extensive pale tips. As well, they tended to have a more short-billed, round headed impression in comparison to this bird, which looks to have a rather sloped forehead.

I appreciate any thoughts on the identification of this bird.















Wednesday, October 19, 2011

Update and FORK-TAILED FLYCATCHER!

Ok so I'm a bit late in updating here but I've been kept busy birding and working and chasing Fork-tailed Flycatchers! I'll have more to say about that later.

So the last low pressure system did bring birds with it. We weren't inundated with hordes of southern warblers and vireos but there was a noticeable arrival of warblers on the Cape Race road at the extreme south eastern tip of the Avalon Peninsula. ( see map in previous post).

There is not much vegetation in this area and nothing much to hold deciduous tree loving migrants. In fact I don't think there is a single deciduous tree or shrub on the entire 21 km road. There might be a single small Mountain Ash but it could have died. What is there is tuckamoor. I'm planning on dedicating a post soon to "birding the tuck" as we call it. This refers to birders attempting to coax passerines from scattered,dense, tangly patches of stunted conifers. It's not an easy endevour but can produce some amazing results, but again that's for another time.

So, three of us hit the Cape Race road on Oct 9 and 10th. Our efforts resulted in 8 species of warblers and two Vireo species. Highlights included, Orange-crowned Warbler (3), Prairie Warbler (5),Palm Warblers (6-8),Nashville Warbler,Pine Warbler,Yellow-breasted Chat (2) and Warbling Vireo. There were also 6+ Yellow-billed Cuckoos, a bag of Baltimore Orioles and 6-7 Dickcissels.

So overall not bad for the area. On a standard day you could bird all of the Cape Race road in October and not see any passerines other than Savannah Sparrow. There was definitely an arrival.

So that was then and this is now. News broke yesterday of a Fork-tailed Flycatcher in Renews. In fact, I broke the news after opening an email from a contact down there. As soon as I opened my email and saw an email titled "stange bird" i got excited. I opened the email and was instantly floored! I never even opened the thumbnail images, it was already obvious that the bird pictured was an adult FORK-TAILED FLYCATCHER!!

I bolted from the couch with Jen asking what, what's going on. I muttered something while getting my coat on. Fo... led ly..catcher. "what? she said. FORK-TAILED FLYCATCHER!!, where are my keys!? Then, Jen says "We have to call people". Right..and when was the bird seen. In my excitement I had forgotten everything else. All I was thinking was, I have to get to Renews, now! I looked at the message again and it was apparent that it was seen very recently. I was now bordering on frantic. Before I could go I had to do a couple of things, I had to take the dog out and make some calls. I figured I'd combine these while Jen got ready. I was outside walking up the road with the dog trying to break the news on this bird.One by one, I either left messages or gave people the news. I returned home to find Jen ready and we hit the road. I had Jen make some other calls as I was driving.

Things were going well, I was swerving in and out of traffic, passing cars under questionable circumstances until we saw something up ahead- a police car, but was it? It was the right color the right model, it had an odd antenna thingy on top and some kind of white and blue reflective tape or something across the bumper, not to mention an RNC sticker on it!! There were two people in the car and one had obviously large aviator sunglasses on. That pretty much sealed it, we were behind a police car- great!

We were thinking what a great story it would be if we got pulled over by the cops, then somehow convinced them to give us a high speed escort right to the birds location. Since this was not likely to happen, we settled in and resigned to a slower than intended drive. Well, as it turns out these cops must have had somewhere to be because they were driving well over the speed limit and I was staying right behind them.I figured, they can't give me a speeding ticket to someone who is behind then right? Well, we tailed the cops almost all the way to Renews at about 25 km\hr over the speed limit and got there in almost record time. Now all we had to do was find the bird!

We made a pass through the area where it had been seen and nothing. We spoke to the discoverer and we were informed that it was on the wires directly above where we were standing only 15 minutes before we got there! Ok, we knew it was still around, it was only a matter of time. Soon, more birders arrived and we provided them with the info and split up. I took off in the car to broaden the search. Only about 5 minutes later my phone was ringing. I answered it and heard " we've got it, right where it was last seen!". I wasted no time getting there and finally on the wires, there it was, a perfect, adult Fork-tailed Flycatcher. This is a species I had chased in Newfoundland before but had not been successful and now here it was, it felt good, a big relief. It was a Newfoundland life bird and #264 on my current year list, putting me 17 species ahead of the previous record.



5th Fork-tailed Flycatcher for Newfoundland but the first that stuck around long enough to be viewed by numbers of birders. (as of Oct 18 the bird is still around)

Friday, October 7, 2011

Will There be Birds or Won't There be Birds That is the Question!

Over the last few years I've been spending an inordinate amount of time studying weather maps and radars and then comparing those maps and radars to significant birding events in Newfoundland in an effort to better predict the types of weather patterns that lead to some of our fall outs of southern passerines. Predicting migration is no easy task in Newfoundland. Most places just wait for a cold front to pass through and they know that there will be bird movement on the back end of the low on NW winds. Actually I'm leaving a lot of stuff out there. Its not actually that easy at all but I'm not going to get into a detailed analysis of the conditions that favor bird migration just yet. I'll save that for later.

For now, I basically want to share some speculation with you all. After all, that's what birders do best- speculate. Speculate about their next year bird, the next life bird, county bird, province bird, ABA bird. You get the idea right? I'm speculating about bird migration, more appropriately reverse migration.

Now there is a term that is familiar to many birders but still completely foreign to others. Therefore, let me explain how I understand reverse migration. Lets start first by breaking down the term into its individual bits. First, lets take reverse. That should be easy enough. A common every day term. If you drive a vehicle you know it well as going backwards. This is true, for our purposes reverse will mean backwards or the opposite of what is commonly believed. Now migration. For our purposes we're only applying this to birds so lets say that migration is simply a movement of birds towards an INTENDED destination. What's important to note here is the terms movement and intended. Birds are moving and they are headed towards an intended destination.

So, now lets combine these two terms reverse and migration, as we have defined them. When we do that we can define reverse migration as "the movement of birds in a direction which is OPPOSITE to their intended or commonly believed destination." If you haven't guessed I'm feeling especially philosophical this evening. So more simply, if passerines are generally thought to undertake a North-South migration each fall,a group of passerines that have made a sudden movement south to north would be said to have undertaken a reverse migration.

Some people get all touchy over use of then term reverse migration, but most of these people are failing to apply the term comprehensively enough. Reverse migration takes in all reasons that birds might have to migrate away from their generally intended destination. Two of several reasons for reverse migration in birds, are weather and 180 degree misoriention. For example, a large flock of birds gets caught in a strong low pressure system and is swept north on SW winds. For an excellent example of this ,read this article about one of the most dramatic weather related reverse migrations ever!

Reverse Migrants in Nova Scotia

However,not all occurrences of off track birds, or reverse migrants can be explained by weather patterns. It is thought that some reverse migration in birds is due to a genetic defect that causes birds to migrate in the wrong direction by 180 degrees. Therefore, they go north when they should go south, west when they should go east etc. To my knowledge this is still somewhat theoretical but could explained some odd movement of birds. For example why are their Yellow-throated Warblers in St.John's every winter??

Anyway, lost in all of this rambling there was a point. I wanted to take a look at the weather maps over the past couple of days, compare them to the radar images of the same area and then actually get out in field to do some birding to see if any of this time spent analyzing this stuff actually pays off!

So lets start by looking at yesterday's weather map and the associated radar images for the eastern seaboard (for those who didn't know, we can see flocks of migrating birds on radar!!)



Weather Map for Oct 5- Notice the isobars running all along the NE Seaboard all the way south to North Carolina then turning NE and crossing Newfoundland

Radar Images for Eastern Seaboard for Oct 5

Base Reflectivity image from Fort Dix Base Velocity image from Fort Dix Base Reflectivity image from Dover AFB Base Velocity image from Dover AFB Base Reflectivity image from Upton NY Base Velocity image from Upton NY Composite Base Reflectivity image from the Northeastern USA


In watching the radar images note the large circular blobs that are growing and moving. Those are birds! Note that there are a large number of birds launching themselves out over the sea off of New York. Isn't it conceivable that some of those birds could get caught up in the south westerly flow and ride those isobars straight to Newfoundland?



Weather Map for Oct 6- Again the isobars are stacked around the eastern seaboard. This time they have moved a little father north and run basically from New York-Maine and wrap around straight to Newfoundland.

Radar Images for Eastern Seaboard for October 6

Base Reflectivity image from Fort Dix Base Velocity image from Fort Dix Base Reflectivity image from Dover AFB Base Velocity image from Dover AFB Base Reflectivity image from Upton NY Base Velocity image from Upton NY Composite Base Reflectivity image from the Northeastern USA



Once again we can see heavy migration all along the eastern seaboard. We also know that there is a pretty strong south westerly flow lying just off shore that is directing winds straight from New York to Newfoundland's Avalon Peninsula. Now look at those blobs on the radar. Notice how they bulge out over the coast in several places. These are birds moving out over the ocean in an effort to move south along the eastern seaboard. Once again its' possible that some could get out there and get caught up in the strong south westerly flow and engage in a reverse migration by following those south westerly winds all the way to Newfoundland

Tomorrow I'll be up well before dawn enroute to check out the migrant hot spots on the southern Avalon. There are four locations high on my list of places to check, Powles Head,Cape Pine,St.Shotts and Cape Race. See the maps below to get an idea of where these places are located.




Map showing the locations of 4 excellent migrant traps on the southern Avalon Peninsula. From left to right St.Shotts, Cape Pine, Powles Head, Cape Race



A more local view of the migrant traps. The long 16 km road that leads to Cape Race can be particularly good for holding vagrant passerines

So there you have it. This is an example of how I might prepare for a day birding. Look at the weather maps, look at the radar,choose my route, then get out there and find some birds. Like I have said before,this is not a perfect science. It is easy to see that some birds definitely got swept out over the ocean over the last two nights but will they head towards Newfoundland. If they do, will they fall out at one of my intended birding sites. Even if all of the above works out I still have to locate and identify them in vast areas! When you consider all of this is seems like a miracle that we ever find any rarities at all!

More likely it means that the number of rarities present is actually far greater than we presume, we are just lucky enough to find a very small percentage of them!


I'll try to update tomorrow or the day after to let you all know how things worked out.