[rec.birds] Sparrows - bluebirds

jimf@ihlpf.ATT.COM (YES) (05/08/89)

Last year I put up 4 bluebird boxes. After pulling out sparrow
nests a hundred times, I got 2 nesting pairs which raised 4 baby
bluebirds a piece. This year we got no bluebirds at all, although I 
saw them try at one box a few times. Guess the sparrows won! Any 
ideas how to get the bluebirds back? Even the one box the sparrows
aren't interested in (it's too far away from the house) hasn't had
bluebirds in it. Could the sparrow droppings on the boxes be repelling
them?