Actually, you don’t want your birdhouses to have perches—that allows predators like crows to reach in and grab the young even though they’re too big to fit all the way through the holes like the parent songbirds, who are capable of zipping straight in without the stop-and-hop.
Actually, you don’t want your birdhouses to have perches—that allows predators like crows to reach in and grab the young even though they’re too big to fit all the way through the holes like the parent songbirds, who are capable of zipping straight in without the stop-and-hop.