We've had a small flock of 12 for 3 years and each year I've improved the coop to keep wild nesters out - but this year the sparrows are not nesting, they are just eating, gorging is really more accurate. Plus it is the social place during the daytime which I think is affecting the hens laying. Last year I put red strips of fabric over the chicken door and I think that help - last year. But no longer. Any other ideas?? The chicken pen is too large to cover with netting - 25'x20'