A couple of species are missing the very helpful species range tool tips:
Two-banded Warbler (Myiothlypis bivittata)
Roraiman Warbler (Myiothlypis roraimae)
Black-eared Warbler (Basileuterus melanotis)
Tacarcuna Warbler (Basileuterus tacarcunae)
Yungas Warbler (Basileuterus punctipectus)
Three-striped Warbler (Basileuterus tristriatus)