Black-Throated Green Warbler

 

Yesterday while I was walking in the Connetquot River State Park,  I spotted this bright little bird. When I got home I tried identifying it, which became a challenge. After searching the internet and going through A Field Guide to Warblers of North America by Jon Dunn and Kimball Garrett, I concluded that it is probably a first fall female Black-Throated Green Warbler. Because the juvenile females do not possess the namesake black throat, they are not as easy to identify.  However, Black-Throated Green Warbler is still my best guess as to what type of bird this was.