I thought it would be one of the Kiskadees. When I saw it live, I had an impression of a bird larger than SoFly, and i also felt there were rufous edges on primaries. The latter can be explained by it being young?
Niels
On the bill it is definitely a Social/Rusty-margined. Either Kiskadee would have a much longer bill.
Young Social Flycatchers can show some rufous edging on the wing but they should show it on the coverts as well. I still think it looks like a textbook adult Rusty-margined Flycatcher, but with just one photo it is hard to be 100% positive. As is frequently the case, voice is the easiest way to separate these species.
And that makes 3. What do you think it is Niels?
Hello Tanagra,
your bird is showing a yellow central crown which excludes Social Fly: their central crown is usually vermilion, less commonly orange-red. (this according to the Ridgley field guide for Panama - the situation might be different somewhere else).
Niels