they also go into torpor during the night while they sleep- their body temp drops and their hearts slow so they can use less energy and not starve
holding an awake hummingbird is like a hot little ball of nothing
when ruby throated hummingbirds migrate south, they have to make a big stop and gorge themselves for ages before flying across the gulf of mexico in one shot
hummingbirds are hardcore
Apparently, when exposed to an infinite food source, hummingbirds will also gorge themselves to a point where they cannot fly—they’d left to just paddle on the lab floor like little spheres with wings.