well baby birds.,..fledglings look pretty big.. but just do not have the flying down pat.. i just mentioned that because i had a nest near my pond and three babies ended up in the water.. but you live in a different climate and it could be they are just thirsty... and then get trapped.Edwin;3166035; said:there is a thick tree nearby with alot of birds.... but the wall is in the way, and the birds i find dead are pretty big, so being beginner flyers i dont know...