Tuesday evening, I got a new hybrid for my Central Park list, a Lawrence's Warbler, which is a Blue-Winged/Golden Winged Warbler hybrid. The Blue-Winged/Golden Winged Warbler hybrids are discussed in great detail in the Warblers book in the Peterson Field Guide series. The book has a great set of color plates that many Central Park birders have cut out and bound into a light weight, illustrated Warbler guide. If you can buy the book used, buy two, one to keep as a reference and one to cut up for the plates.
The Yellow Warblers are still being as photogenic as ever. I can't stop posting them!