My next door neighbor has 2 very large trees in their yard. I trim whatever hangs over into my yard, by law I am allowed to do that. The problem & this is the first time I have ever seen this & I've been here over 30 years, in the early evening, lot's & lot's of bird's decide to hang out in those tree's & boy are they noisy ! But the bigger problem is that they seem to fight with one another & I have bird feather's all over my back yard & front & so do my neighbors ! Anyone know what's going on & is there anything I can do about this problem? They also do a lot of damage with the poop all over my shed's & fences.....Thank you guys !