Direct interactions among conspecific and heterospecific animals are often mediated by
aggressive behavior. We analyze the ecology and evolution of resource-related …

Drastic losses of wetland habitats across North America over the past century have resulted
in population declines of many marsh birds therefore emphasizing the need for proper …

The Least Bittern (Ixobrychus exilis) and the Pied-billed Grebe (Podilymbus podiceps) are
secretive marsh bird species that breed in the Illinois and Upper Mississippi River Valleys …

Call-broadcast surveys are frequently used to elicit responses of secretive marsh birds and
produce greater detection rates than passive surveys. However, little is known about how …

Abstract The Cretaceous Hesperornithiformes are an extinct group of aquatic birds long
recognized to have practiced foot-propelled diving. This specialization is seen today in a …

Wetland degradation has resulted in declines in populations of aquatic birds throughout
North America. Horned grebe (Podiceps auritus), a migratory diving bird experiencing …

Incorporating information about habitat use and success of breeding birds contributes to a
more complete understanding of their ecology and distribution, and can also inform …

Annual ground surveys of mid‐continent waterfowl may provide a monitoring framework for
other wetland‐associated species. We used a repeated‐counts method to estimate …

Wetlands of the Prairie Pothole Region (PPR) provide important breeding habitat for greater
than 30 species of waterbirds. Approximately 70% of PPR wetlands have been lost since …

Continental trend data for North America suggest that Horned Grebe (Podiceps auritus)
breeding populations are declining and Red-necked Grebe (P. grisegena) populations are …