Abstract
Over the last decade or so, we have monitored breeding bird densities over the entire range of habitats within GTNP, from grasslands and sagebrush to scrub, woodland , and forest. Many field workers, including park scientists, have contributed to the monitoring efforts. In all, there are 30 established monitoring sites, and each has been visited on average in two out of three years since 1995. Some sites, however, have been censused yearly, and on some of these the census record extends back for several decades. The monitoring work provides a rather complete assessment of the park's breeding bird communities, i.e. species over habitats among years, and to date some 160 species have been recorded in the monitoring effort, all but a handful of which are breeding birds. This report addresses specifically one prominent group of breeding birds, the emberizine sparrows and buntings.