Migrant Bird Habitat Study

The Migrant Bird Habitat Study was planned by the Urban Conservation Treaty for Migratory Birds partnership. The goal of the study was to identify tree species that are used more often than others by foraging migrant birds in spring, in order to provide better information to those wishing to improve habitat for migrants.

In April and May of 2001, 2002, and 2003, 31 volunteers conducted the study at 18 sites in the Chicago Wilderness Region. Data were analyzed by comparing the observed and expected frequencies with which birds were found in a particular tree species.

The results of this study underscore the need for a diversity of tree species within a given park, preserve, or natural area.

The complete September 30, 2004 report in PDF format , including a two-page executive summary that can serve as a stand-alone informational piece, is now available.