Globally, grasslands and the wildlife that inhabit them are widely imperiled. Encroachment
by shrubs and trees has widely impacted grasslands in the past 150 years. In North America …

Nest predation is among the most important selective pressure sha** nest-site selection
and nest defense behavior in many avian species. In this study, we tested whether the …

Grassland songbird populations across North America have experienced dramatic
population declines due to habitat loss and degradation. In Canada, energy development …

Predation involves costs and benefits, so predators should employ tactics that reduce their
risk of injury or death and that increase their success at capturing prey. One potential way …

Due to consistent population declines across the continent, grassland birds have become a
guild of high conservation and management interest. Despite a large number of studies …

Patterns of nest defense against predators by ground-nesting bird species in the wild are
poorly understood, largely because of a historical inability to directly monitor nests. Most …

Predation risk on birds is often an important source of natural selection that shapes parental
care and may promote behavioral changes. Parents can often estimate certain risks and …

Nest predators are responsible for the majority of reproductive failures in birds in multiple
habitats globally. Snakes are likely one of the main nest predators, but few studies have …

Bachman's Sparrow (Peucaea aestivalis) is a species of conservation concern throughout its
range and an effective indicator of healthy pine savanna ecosystems in the southeastern …

Some avian species augment nest cups by building associated architectural structures that
may mitigate predation, parasitism, and/or hatching failure. Because effective nest …