Depending on what species, I have seen these shapes; although there may be others:
1.V
2.B
3.D
4.W
5.G
6.S
7.C
8.A
9.R
10.O
11.M
12.Z
13.X
14.H
Interesting what you can see if you only look up...
Because birds and other flying creatures eat insects.
flying animals
no
Because birds and other flying creatures fly over plants.
birds are warm blooded just like all other flying mammals
Duckington
flight refers to a group of flying birds, ie a flight of swallows
Any strange or unusual events can be thought of as Omen's. Depending on who is reading them they can be viewed as good or bad omens. No reason why a seer would say that birds flying into each other wasn't an omen.
So birds can fly away from other animals that want to eat or kill them
Birds as a Specie have compared to humans incredibly fast reflexes. So as it appears two are going to collide they actually know perfectly well of what is happening and have plenty of time to turn away from each other :)
Birds such as Robins tend to eat worms and other burrowing insects. Flycatchers, swallows, and nightjars eat flying insects. It depends a lot on the type of bird.
No, They migrate like all other birds; by flying on their own or in pairs