Crows

Hi, I have crows nesting in my eaves in the spring and they are very noisy and jump about on mine and my neighbours dorma waking everyone up. I am having some work done and they are going to block up where they are getting in, I have noticed the crows coming and going again and feel a bit mean doing this. Will they have always been there all year around and just noisy in the breeding season. I live next to a wood, so they won’t have to go far to find a new home. Thanks in anticipation for your kind answers.