Late Warbling Vireo at Famosa Slough and dark breeding- plumaged Willet at Robb Field, Wednesday, June 15
By – 4:33 pm
This morning while birding with Char Glacy, Jan Nordenberg and Mel Senac, we saw two interesting birds. One was an alternate plumaged Willet in the mudflats off Robb Field, a day later than the earliest fall arrival date given by Paul Lehman in his Bird Atlas update file. This Willet seems to be an example of one of the real dark types of “Western” subspecies ( Tringa semipalmata inornata ), similar to the darker “eastern
” subspecies, T. s semipalmata, but with other marks, like bill shape, seeming to be fine for “Western.” Records of the eastern ssp. are also nearly non-existent in the West. It is presumed to be one of the early adult arrivals from the breeding grounds. Checklist with photos by Mel are at https://ebird.org/checklist/S112993659 .
Another bird of interest was a late migrant Warbling Vireo at Famosa Slough in a coral tree area along Mentoni St. singing almost continuously. Photo by Mel and song recording by Char are at https://ebird.org/checklist/S113001334 . There was also another bird in the same tree that looked like a possible Yellow-green Vireo, since it was slightly larger than the Warbling Vireo, had a bright yellow-green back, and much bright yellow below, but we lost it and it was silent. If anyone is birding in this area, they might want to see if they can re-find it. Good birding to all. Sue
Seiurus Biological Consulting
Del Mar, CA
— Susan SmithSeiurus Biological ConsultingDel Mar, CA