Is back in Costa Rica from “up north” and no longer called just “Yellow Warbler” as in the past but has a new official name of Northern Yellow Warbler – Setophaga aestiva (linked to my gallery) and what is used by eBird and iNaturalist. Some older books still say just Yellow Warbler and the Princeton Field Guide says American Yellow Warbler. I’m not sure which names are harder to keep up with, Birds or Butterflies! 🙂 They seem to both be changing frequently. This particular bird showed up on December 1 in my Cecropia Tree. Here’s two shots of him/her . . .
And oh yes, there are other Yellow Warblers, like the Mangrove Y.W. and the Prothonotary Warbler, so I guess it makes sense to give the plain Yellow Warbler a longer name for identification. 🙂
¡Pura Vida!