Crisis of conscience :D - opinions please

All summer long I've been waiting for cooler weather to clean out our horrible, "gone to complete chaos" beds. I want to replant with native plants, and for the most part I think fall is the best time for this. My goal is a pretty, natural looking yard that attracts and is a healthy habitat for birds and butterflies. However, now the birds are gorging themselves on all the plants gone to seed and producing berries. I have feeders out year round, and wooded to semi-open acreage adjacent to the yard that we leave to grow wild that provide food. Do I just go ahead, because I'm ultimately providing a healthier environment for them, or wait til spring? I'm cross posting in the native plants forum. Thanks!

I think it depends on your weather but if it's colder than usual (as ours is) I would wait till spring.