[arooaroo]

I’ve mentioned this previously but it’s on topic and still amazes me, so I’ll just copy & paste:

I know someone who works at one of the London airports and is responsible for keeping the runway operational. One of the jobs is keeping the birds well clear, and if necessary, sadly, may resort to shooting. The crows know the score though. This acquiantance says the crows know to disappear if they see the bird clearers. What's "clever" is that they only take flight if it's one of the shooters. They recognise the veichle(s) despite them being all the same fleet. So if someone else is driving round to check something else, the birds completely ignore. If it's the "bird guy" then off they go with little encouragement.

[kimi]

Corvids are an issue for agriculture, because they eat seed and small plants. The Swiss agriculture bureau has a file for them, explaining how to handle them, and it basically boils down to "you can use a number of different measures, but corvids are smart, they learn and don't forget, so there is nothing that actually works". - https://m4.ti.ch/fileadmin/DT/temi/caccia/documenti/Scheda_C...

[kyuudou]

At one airport in the US, I learned about how this is accomplished with what sounds like a shotgun. Apparently this is a propane cannon[1] and there are a wide variety of such "scarecrow" devices.

I would guess crows prefer hunter-gatherers over horticulture/agriculture societies of humans! A weird twist.

1: https://en.wikipedia.org/wiki/Bird_scarer#Propane_cannons