This video says about itself:
Fulvous-vented Euphonia And Thick-billed Euphonia Males Share Panama Fruit Feeder – Nov. 18, 2020
It was quite a busy afternoon with both Thick-billed and Fulvous-vented male Euphonias, as well as Clay-colored Thrushes and Bananaquits all seeking snacks at the feeder. A morpho butterfly flits in and out of the scene as well, adding to the tropical wonder of this diverse scene. Note the dark throat and bib on the Fulvous-vented Euphonia setting him apart from the Thick-billed who is rich yellow in these areas.
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