Population Structure in Salt Marsh Song Sparrows: Part II: Density, Age Structure, and Maintenance

Abstract

This is the second part of a report on the population ecology of the Song Sparrows (Melospiza melodia) living on the salt marshes of the north part of San Francisco Bay. Part I (Johnston, 1956) dealt with a description of the environment of salt marsh Song Sparrows and with their breeding behavior and movements. This part treats demographic considerations.