This Sunday morning was quite cold for the Everglades, temperatures reached below 32°F overnight. Native species of fish can survive such cold conditions but the tropical exotics like the oscars, blue tilapia and Mayan cichlid can't survive the cold. The presence of so many easy meals meant that birds like black vultures and crows were enjoying a rare treat of fish.
Normally selectively killing these exotic species would be a good thing, except that if there aren't enough native fish species left, the birds that usually populate this area in the winter will have to move on and search for food elsewhere. In the meantime the scavengers like the vultures and this crow as well as the herons and egrets are enjoying a banquet of exotic sushi.