We have red-tailed hawks nesting in these huge eucalyptus trees across the street from us who are always cruising our neighborhood and close-by fields, and they've never bothered the doves. We also have an occasional white owl that cruises over and the doves (and sometimes pigeons) pay no attention to them. Either they're too stupid or the food source around here is better than dove/pigeon fodder. My antenna is 30' above ground level so when they're roosting, everybody and everything can see them. Very discouraging.