Why are my peafowls suddenly behaving like this?

[Cardia]

Hello! These are my 8 month old peafowls. Their usually very calm and quite but today I found them like this! All their feathers are up and they seem to be “screaming” but I don’t know why? They live like with my other chickens in a large chicken pen but they get along well and they’ve never acted like this! Some tiny wild birds accidentally got in the pen today maybe they got scared? But I can’t think of any other reason ? I’ll try to leave the video down below! - had to leave a YouTube video since the video didn’t want to upload on here

 

[casportpony]

Something spooked them.

 

[KsKingBee]

They saw something and are alerting to an intruder. Could be anything, even a very high flying eagle or hawk.