Unless you have a good-sized lawn, you’re more likely to see Western Bluebirds in a park with plenty of trees and bugs. They are more visible during breeding and nesting season, as they are busy gathering food. Western Bluebirds (WEBLs) often build multiple nests before choosing the best spot to raise their young. Their main challenge is finding a cavity to nest in; since humans often remove dead trees and branches from parks, suitable nesting sites are scarce. The SFVAS provides nesting boxes in select San Francisco parks, which the WEBLs use. Let us know if you’d like to hang a nest box or two.
Mountain Bluebirds (MOBLs), as their name implies, are more likely to be found in elevated terrain.
