Kinda proves your shooting of them isn't working then. Evidence available that says squirrels eating bird eggs doesn't harm their numbers.
Domestic Cats by far the worst offender with songbirds numbers down.
Bird population around my house is thriving.
Cull Magpies, Crows and Squirrels......incredible numbers.
All nest boxes were taken up this year. Nuthatches, Great Tits and Blue Tits fledged. The Magpies will take the young birds thus always help them along.
BlackCaps, Chiffchaff nests around the garden intact.
Grey Squirrels rats with tails.