I see you live in Connecticut and, in your pics, I see a lot of big trees---very nice and the perfect place for raccoons to breed and grow.
I live in the lower Hudson Valley in NY---we have raccoons, coyotes, foxes, mink, weasels, and various aerial predators. Not to mention dogs and feral cats.
Raccoons are active mostly at night. We've been on this property three years and I can say that the only evidence I have seen of them is roadkill and tracks in the snow.
But they are here and they are nasty killers of chickens.
When I lived in a more suburban area of NY I saw raccoons all the time, ducking into gutter drains in the curbs. We disposed of some that had set up shop in the space between our first floor ceiling and second floor. Another big pregnant one hissed at me from the rafters in our carport when I went out at 5:30 in the morning to go to work. Somehow she disappeared (no further comment).
But here, where there is more cover for them, I don't actually see them except when they are dead on the road.
I truly wish I could say that if you haven't actually seen them they won't be a problem but I find it difficult to believe that they're not living in your environment.
Sorry, but I'm afraid that raccoons may eventually find your precious birds and give you a lot of heartache---so please consider more predator-proofing!