With Erik Haney; a successful chase of the Couch's Kingbird, which will represent the first Florida record if accepted by members of the Florida Ornithological Society Records Committee. We stayed at the northeastern corner of the park, although I did one walk-around. The weather at the start was overcast with light sprinkling and 73 degrees ("feels like" 73), and rather windy. We left at 1330.
I was really hoping to get audio-recordings of its call notes, since field identification between silent Couch's Kingbirds and Tropical Kingbirds is questionable. As far as I know, nobody has determined the kingbird's age, but if it is an adult, then I got conclusive photographs to support Couch's Kingbird: the four outermost primary tips are evenly spaced (as here) on Couch's Kingbird but are unevenly spaced on Tropical Kingbird. Apparently, this feature does not apply to juveniles.
Probable Couch's Kingbird, originally located and identified by Juli DeGrummond (https://ebird.org/checklist/S154178272), relocated during my visit by Hannah Sellers and Michael Ash. Stubbier, thicker bill evident in these photos,which along with the vocalization and flight photos recorded by DeGrummond, favors Couch's over Tropical. A lifer! Eliza Hawkins got some excellent sound recordings, that also support Couch's https://ebird.org/checklist/S154196712