I’m seeing more of these this year, maybe more than the Great Kiskadee, which has always been the dominant flycatcher around my house.
The differences in those two, to help your IDs, is that (1) the Kiskadee is much larger than the Social, which of course would be easier to tell if they were side by side! 🙂 (2) The bill or beak is much larger and longer on the Kiskadee and after seeing a lot of both, that helps with ID and (3) though both have a white ring around their heads with a black center, the Kiskadee also has a bright yellow spot in the center of the black circle which the other flycatchers don’t have. And lastly, (4) though both have a bright yellow belly, this Social’s back is a duller brown while the Kiskadee’s is a brighter red-brown or what birders call “rufous.”
Then this Social Flycatcher can also be confused with the Boat-billed Flycatcher of about the same size (a tad larger maybe), but the big difference there is the larger, boat-shaped bill. But they too have the dull brown back, bright yellow breast and B&W head. Confusing? 🙂

If you would like to compare these three similar flycatcher type birds, you can of course go to eBird or compare my photos of each in my galleries . . .
In my nearly 11 years here I’ve seen the Great Kiskadee the most, all over, with Social Flycatcher the second most seen and the Boat-billed the least seen. But that is not a scientific analysis of the populations! 🙂
¡Pura Vida!