Date: 5/17/20 1:02 pm
From: Ian Worley <iworley...>
Subject: [VTBIRD] Golden and Blue-winged Warblers ... IDing, and submitting to eBird.
Hello birders in search of the "winged-warblers" in Vermont.

These fascinating birds are back, perhaps where you have seen them
before, or in newly evolving habitats as abandoned fields begin to fill
with shrubs and trees.  Or maybe a familiar site has changed enough that
it is no longer suitable.

This would be a good time to revisit, or visit for the first time, some
documents which will tell you about the winged-warbler complex, what to
look for when viewing the birds and identifying each individual, and how
to submit to eBird.

----- For a Vermont background on the wing-warbler complex in the state,
read about the "Golden-winged Warbler Conservation" project underway by
Vermont Audubon:
https://vt.audubon.org/conservation/golden-winged-warbler-conservation

----- In that website is this link to a detailed article about the two
species and their hybrids. Two important aspect of these birds are (a)
vocalizations heard can not be used to determine whether the bird
singing is one or the other of the species or a hybrid, and (b) IDs are
dependent upon combinations of many plumage characteristics.  Here is
the link:

https://vt.audubon.org/sites/default/files/static_pages/attachments/winged-warblers._how_to_tell_a_pure_species_from_a_hybrid._7-10-19e.pdf

*******----- The last page (page 7) of that article is a table to keep
handy as you bird.  It has eleven diagnostic features to look for,
features that will help you decide if the bird you are viewing is one of
the two species, a named hybrid, a hybrid of some mix of
characteristics, or not possible to figure our from what you saw or heard.

----- For figuring out how to submit your observation to eBird, use this
guide from the Vermont eBird website:
https://ebird.org/vt/news/golden-blue-winged-warbler-potpourri-how-to-submit-to-ebird

As always, if you are able to photograph a bird or birds, multiple views
are much more helpful than a single photo.  eBird allows up to ten
photos per species.

Happy warblering!

Ian
Vermont eBird reviewer for the Champlain Valley
 
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