Yellow-throated Warbler is an uncommon migrant in Morris and Somerset Counties. The past two days saw an unusual number of reports in the area. In these two counties, Yellow-throated Warbler reports totaling greater than zero is unusual.
Yesterday at Lord Stirling Park, Bernards Township, a Yellow-throated Warbler was observed closely and well-described by Ben Barkley. That is interesting enough in itself.
Today, April 22, a different Yellow-throated Warbler was viewed in the afternoon and photographed by Simon Lane and earlier by Tom Smith which show a possible hybrid between a Yellow-throated Warbler and a Yellow-rumped Warbler.
As always, click on the photos for a larger image.
Below is a photo of a classic Yellow-throated Warbler at Colonial Park, Franklin Twp. in 2014. Many of you may remember this individual. Note the solid yellow neck and upper breast and the white abdomen.
Below is the Lord Stirling bird today with a necklace where some yellow should be.
Thickening the plot, note the faint yellow rump patch. Yellow-throated Warblers do not have yellow rump patches.
Putting these characteristics together equals a possible, if not probable, Yellow-throated Warbler and Yellow-rumped Warbler hybrid.
mocosocoBirds will attempt to get more information about this hybrid combination.
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