Bell’s Vireos feed on insects and spiders, as well as small fruits such as berries. They ambush insect prey by plucking them off of vegetation or scooping them off the ground. They primarily socialize only within their species. Males will select a specific territory and defend it by maintaining their songs. Nests are constructed by a pair selecting a fork of branches or twigs in a shrub that is then made into a cup by dry grasses, spider silk, and plant stems. Chicks are born helpless and require heavy parental care initially.