The daily patterning of vocalizations was determined for 15 species of forest-edge birds at the UWM Field Station. Species that were predominately callers (gave few songs) had very erratic patterns of vocalizations. Species ...

Population sizes of four small mammals, Peromyscus leucopus, Microtus pennsylvanicus, Blarina brevicauda, and Sorex cinereus, were monitored for over twenty years at the UWM Field Station. P. leucopus had moderate fluctuations ...

Data were gathered in 1984 on the distribution, size, and habitat of populations of purple loosestrife in Wisconsin. Lythrum salicaria was found throughout Wisconsin, but most populations were still small and amenable to ...

During 1989, the UWM Field Station obtained a digital data logger weather station manufactured by Campbell Scientific, Inc. The equipment was operational in September 1989 and has produced continuous records since that ...

Call synchrony has been reported for the snowy tree cricket (Oecanthus fultoni), but the degree to which it occurs in natural interactions has not been previously investigated. I recorded acoustic interactions among ten ...

The dominance of females over males in winter flocks is rare. In this paper, I report on female dominance over males in winter flocks of Purple Finches (Carpodacus purpureus). Females won nearly all observed intersexual ...