An Anna's hummingbird is challenged at the hummingbird feeder by a Black-chinned hummingbird and flies off

annas hummingbird challenged hummingbird feeder black chinned hummingbird fight aggressive territorial fly away aerial battle trochilidae smallest birds tiny colorful wings hover midair nectarivores bill beak aerodynamic high speed iridescent green pink magenta rubythroated hummingbirds archilochu migratory birds scottsdale arizona broadtailed nectar eating wildlife magnificent exotic feathers nature wing sugar water hummingbird eating environment ornithology hovering takeoff birdwatching garden metabolism