Black-bellied Hummingbird (Eupherusa nigriventris) is a species of hummingbird in the Trochilidae family. It is found in moist forest and edge at middle elevations on the Caribbean slope in Costa Rica and Panama
Hummingbirds are often territorial, and this photo of one Anna's hummingbird literally grasping another's beak to get rid of it demonstrates just how much. Miller via Birdwatching Daily.What the hay! I think he may have little bird syndrome.