Yes, very much so. Have you ever seen hummingbirds chasing each other away from feeders? This shows that they are protecting or fighting for a territory.
Hummingbirds eat sugar water and plant nectar.
No hummingbirds do not go in groups because they have to go on their own so they can learn things that hummingbirds ususally do and live up until 3,4, or 5 years it depends on the type of hummingbird.
I've never heard of one getting "aggressive" ie. attacking. But I have seen hummingbirds try to communicate with me when the feeder was empty. Pretty smart! Hummingbirds are territorial. It may see its reflection in the glass and think that it's a rival.
Hummingbirds are VERY territorial, so no, they will stay. IF you live far enough South. Tucson, Arizona has a migratory hummingbird population....
hummingbirds
Yes hummingbirds have lungs.
The Hummingbirds ended in 1993.
The Hummingbirds was created in 1986.
Regardless of which migration route they take, hummingbirds will take the same path that was imprinted the first year that they flew. And they fly alone. Young hummingbirds do not follow their parents and they do not fly in flocks.
no hummingbirds only drink nectar.
A group of hummingbirds is typically called a charm.
Hummingbirds of the Americas was created in 2001.