Etiqueta: John M Hagan

Ecology And Conservation Of Neotropical Migrant Landbirds

Ecology And Conservation Of Neotropical Migrant Landbirds

For more than a decade ornithologists have suspected that migrant landbird populations in the United States and Canada are declining. Fragmented forests in the northern breeding grounds and the loss of habitats in tropical wintering zones have been suggested as two major factors in the population declines. This is the first technical volume to focus […]