On a recent walk through a deserted park, I noticed that as I approached a copse in the centre, a whole murder of crows really kicked off. It was hard not to imagine it was in response to my presence. As I passed they calmed down.
And when I turned back and started going towards them, they really kicked off again.
Not having the faintest clue about corvid chickcare, I wasn't sure if they were pranking me (having had magpies get one over on me) or alarmed for their chicks
All part of lifes great tapestry.