Summary

Description

As a measure for the protection of their young, some bid species establish territories which surround their nests. A territorial behavior is practiced within the territory in response to a stranger with in his territory. A determinate factor of this behavior is the condition of the young. In the Western Kingbird territorial behavior changes as the young develop. A study was conducted on a pair of Kingbirds and their young to illustrate their changed behavior. The study will examine what is the territorial area of the Kingbird and: 1 territorial responses and displays of the parent Kingbirds while the young were in the nestling and fledgling condition, 2 the lack of territorial responses and display by the fledglings when the parent birds were absent.