Well I have nine chickens and I started to Notice that there were some feathers of a chicken on a certain spot but the chicken was good (is a batham) so the next days I stayed near them to check what was happening and I saw a bird attacking them I'm sure it was no eagle but it look grey and that it was trying to catch my chickens, for good I have two guinea chickens (kinda alarm chickens) they scared the bird away with their sound but idk what to do if some other bird comes by and try to catch a chicken so any ideas of how can I make that bird go away?