4 ms·Possibly for the same reason you watch it. It's interesting.by dalbasal 6y agoPossibly for the same reason you watch it. It's interesting.nradov 6y agoIt must be really interesting for the hummingbirds considering the metabolic cost. Unlike some other birds they have to eat almost constantly to maintain body weight.dalbasal 6y agoGotta make time for some recreation no matter who you are.