the buns know crow language...

Buns frolicking in the garden, crows high above start making a racket, buns are freaked and head straight into the hutch safety, normally they're not that freaked, so I look up - Crows are mobbing a Buzzard...that would explain that then!

Yep, we get Buzzards and Red Kites in central St Albans.

oh wow! Very interesting...
glad the buns are okay.

I think my buns know blackbird language too

I also see the Crows having a go at Herons in the sky.

I think it's quite common for bunnies to pick up on cues from other species. Mine are definitely very aware of what my chickens various behaviours and noises mean.