Angry
A flock generally refers to a large group of birds. It also applies to sheep.
The saying is "Birds of a feather, flock together." I don't know who wrote it but it implies that people that have the same interests or likes, or feelings will gather together just as birds do. Birds will flock with their own kind. Mean people tend to hang out with other mean people. Intellects tend to hang out with other intellects. Crows fly with other crows. Sparrows gather with other sparrows. Criminals tend to stay near other criminals. And so on...... The related link below will explain it better than I can.
I believe that orny has to do with birds because ornithology is the study of birds.
Grooming themselves.
Refers to a family of nocturnal birds
It means to be in a bad mood.
No, it means grouchy or crabby.
Crazy, out of control.
Kind of like 'going crazy.' If a cat went berserk when it got wet, then it was acting crazy. If someone 'goes berserk' at a party or something, it might mean they are partying hard or intense or wildly, etc.
it means mad or angry grouchy or grumpy
the meaning of that is when a man is acting rudely
Out of sorts means grumpy, crabby, or in a bad mood.
A crabby person. A negative person who maybe verbally abusive
It means people with similar interests or shared characteristics group together.
"Berserk" means crazy, describing a frenzied warrior in Old Icelandic.
Birds with the same feather flock together means that like people tend to associate with each other. Those that like sports tend to hang together and those that like video games can be found together.
People of the same sort are usually found together.