Northern bentbill explained

The northern bentbill (Oncostoma cinereigulare) is a species of bird in the family Tyrannidae. It is found in Belize, Colombia, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, and Panama. Its natural habitats are subtropical or tropical dry forest, subtropical or tropical moist lowland forest, and heavily degraded former forest.

Further reading

• Book: Skutch, Alexander F. . Alexander Skutch . 1960 . Northern bent-bill . Life Histories of Central American Birds II: Families Vireonidae, Sylviidae, Turdidae, Troglodytidae, Paridae, Corvidae, Hirundinidae and Tyrannidae . Pacific Coast Avifauna, Number 34 . Berkeley, California . Cooper Ornithological Society . https://sora.unm.edu/sites/default/files/journals/pca/pca_034.pdf#page=556 . 555–560 . none .