We have had only 1 rat, thankfully! It was male and not full grown yet. We seen it one night putting the kids to bed. Then set traps even a leg hold one. Hubby finally got it with a pellet gun after sitting out there for almost 2 hours. I do see my birds catch mice too, talk about mayhem when that happens! Brahmas catch them most the time of see it.
Only time we witnessed chickens catching mice in the yard far from the coop was a Leghorn who found a nest of 3 pink babies and tore them apart, and our littlest Silkie who caught a small mouse and had all the other chickens chasing after her - she was NOT going to give up her catch! I hope this means our chickens are always catching other rodents when we're not there to watch! I was thinking about getting a cat but with chickens doing the job I won't need a feline LOL!
I have yet to see my guineas catch one. Talk about vicious birds! Have two left who think they are chickens and run with my BA pullets.