Crows are stupid birds…
Every morning I am awokened by evil crows trying to crack wallnuts on my roof. The shingles are kinda soft so it will never work. Yet they continue to try… I mean how stupid can they be? They are birds… They can fly!
Fly high, drop the nut then dive after it and snatch the internals after Gravity takes care of the nut-cracking.
Now i want to install motion sensitive water-sprinklers on the roof, that should be fun