This is one of several common brown & yellow birds with Black & White trim and this one most often is confused with the Great Kiskadee as about the same size. Social Flycatcher is colored the same but always smaller (and chubbier) and after awhile you get an eye for size and even the personality of birds which in this Boat-billed is different from the cockier Great Kiskadee. Plus I got a shot from behind and the white ring around this one’s head has all black in the center while the Kiskadee has yellow plus a spot of yellow on the black next to his beak. AND this Boat-billed has a bigger or fatter beak (boat-shaped?). But at first glance all of these look almost the same! I further verified my ID by running 3 of these photos through Merlin, the magical bird-ID app for your phone from eBird. 🙂
3 more shots . . .