Note the shaggy rear crown and nape. I thought this bird looked a little different when I spotted it high on a tall snag, but we passed it off as just another Tropical Kingbird. However after examining this photo, Paul Donahue pointed out that the short, slightly curved bill and pale forehead are indicative of Gray-capped Flycatcher instead. Canon PowerShot SX60 HS.
References:
Gray-capped Flycatcher (Myiozetetes granadensis), In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. retrieved from Neotropical Birds Online: https://neotropical.birds.cornell.edu/Species-Account/nb/species/grcfly1
Mobley, J. (2019). Grey-capped Flycatcher (Myiozetetes granadensis). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/57458 on 24 July 2019).