Widespread, common and adapatable, the Tropical Kingbird (Tyrannus melancholicus) is not considered a threatened species by the IUCN . 

Tropical Kingbird has a gray head with a semiconcealed red coronal patch, dusky lores, white throat, grayish olive upperparts and yellow underparts.  

Is one of the most widespread and conspicuous inhabitants of open forest, forest edge, scrub and agricultural land from the southwestern United States south to Argentina.  Birds from the northernmost and southern breeding areas migrate to warmer parts of the range after breeding. 

Although a widespread bird and a seemingly typical kingbird, the Tropical Kingbird is among the most specialized of flycatchers. It forages almost exclusively by sallying after large flying insects. 

References:

Jahn, Alex. E., Philip C. Stouffer and R. Terry Chesser. 2013. Tropical Kingbird (Tyrannus melancholicus), version 1.0. In Neotropical Birds Online (T. S. Schulenberg, editor). Cornell Lab of Ornithology, Ithaca, New York, USA.