Bermuda Phylloscopus — final chapter?

Thanks to some persistence from Wendy Frith, who finally got some audio recordings, it appears that the identification of the Phylloscopus warbler on Bermuda has been nailed down: Arctic Warbler. Andrew Dobson has photos and audio links in his eBird checklist, which also gives a nice sense of the other birds at the site. Obviously some defended this identification at the outset. With the benefit of hindsight, please do add your comments to how this might have been identified if the audio recordings had not been obtained.

For those that use eBird for record keeping worldwide, please note how photos, audio recordings, and field notes can be combined on a checklist like this, which also contributes to your personal record keeping and global database. For example, here is the ever growing range map for Arctic Warbler. Your additional records will help to make this map (and others) even more complete.

This is a new record for Bermuda and the first record for Arctic Warbler on the North American side of the Atlantic Basin. If anything, this record has been instructive (for us North Americans anyway!) as to just how difficult some Phylloscopus can be and just how important the calls are to confirming the identification. Congratulations to our Bermuda colleagues who stuck with this one and finally nailed it!

Here is one of Andrew’s more recent photos, but do be sure to check out the full set.

Bermuda Arctic Warbler

This entry was posted in 18) Warblers, Crests, Wrens, 25) Birds around the World on by .

About Team eBird, Cornell Lab of Ornithology

The six of us work at the Cornell Lab of Ornithology. Chris Wood, Marshall Iliff and Brian Sullivan coordinate eBird -- the global bird-recording scheme that has gathered 170 million records from over 150,000 users from every country in the world. Andrew Farnsworth coordinates BirdCast, a cross-disciplinary collaboration with computer scientists to predict regional and continental bird migration. Jessie Barry coordinates Merlin Bird ID, an app that uses crowdsourced data to help people identify common birds, currently focused in North America.. Tim Lenz is our eBird Programmer. In our free time, we are all Bird Race addicts and together we hold several Big Day records -- including the North American record of 294.

5 thoughts on “Bermuda Phylloscopus — final chapter?

  1. Christian Cederroth

    Brilliant with the recording!
    Still the yellow tones on the underside, the “tie” especially, puzzles me. Could anyone tell why it’s not P. examinandus after all? The call … I’m not sure. Is it possible to get a sharper image of the sonogram? Or is this all within range of P. borealis?

  2. linosabirding

    A great and most learning case !! with these new photos of course bill shape is better visible and is not what we should find in plumbeitarsus which was my 1st guess…. also, now the dark tip to under mandible is visible and this alone eliminate plumbeitarsus and favour Arctic W-complex…. as well as the mottled ear-coverts !! GC are now all grown and show a too narrow and small pale tip set that is unlike in plumbeiatrsus and pro Acrtic-complex again.
    I do not know however as to eliminate examinandus :-((((

    A great case perfectly fitting the Birding Frontiers spirit: always leanring, also from personal mystakes ! 😉

  3. Pingback: Bermuda phylloscopus Warbler: Another look | Birding Frontiers

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