Three female Black-Chinned Hummingbirds (Archilochus alexandri) "argue" over who gets to use which station at the feeder. Recorded 6/14/97 in my back yard.
A male Black-Chinned Hummingbird (Archilochus alexandri) vocalizes as he feeds. Note the sound of the "hum" from his wings. Analysis of this hum indicates his wingbeat frequency is 51 beats per second!