Pearl Kite (Gampsonyx swainsonii) is a very small raptor found in open savanna habitat adjacent to deciduous woodland. It is the only member of the genus Gampsonyx and is in the Hawks, Eagles, and Kites (Accipitridae) family. The scientific name commemorates the English naturalist William Swainson.
It is a "very small raptor found in open spaces, often perched on a telephone wire or exposed tree. Size alone helps with identification. Even smaller than a kestrel, with unmarked white underparts and gray back. Also look for buffy forehead and cheek and rusty flanks. Sexes alike. Usually seen singly around open fields."
Ebird with species description, range map and sound recordings: https://ebird.org/species/peakit1/ and https://ebird.org/explore
Xeno-canto Bird songs, sound recordings, and species range map: https://xeno-canto.org/species/Gampsonyx-swainsonii
Merlin Bird ID (great app available for Iphones) by The Cornell Lab (Bird ID help for 8,500+ species) https://merlin.allaboutbirds.org/
Comprehensive Feather I.D. tools and more: https://foundfeathers.org/resources/
Found Feathers (Worldwide): https://www.fws.gov/lab/featheratlas/idtool.php