Citizen science, the involvement of volunteers in research, has increased the scale of
ecological field studies with continent-wide, centralized monitoring efforts and, more rarely …

West Nile virus (WNV), the most widely distributed virus of the encephalitic flaviviruses, is a
vector-borne pathogen of global importance. The transmission cycle exists in rural and …

Billions of nocturnally migrating birds move through increasingly photopolluted skies, relying
on cues for navigation and orientation that artificial light at night (ALAN) can impair …

Citizen science has a long history in the ecological sciences and has made substantial
contributions to science, education, and society. Developments in information technology …

Species across a wide range of taxa and habitats are shifting phenological events in
response to climate change. While advances are common, shifts vary in magnitude and …

The green-up of vegetation in spring brings a pulse of food resources that many animals
track during migration. However, green-up phenology is changing with climate change …

Over the past half century, migratory birds in North America have shown divergent
population trends relative to resident species, with the former declining rapidly and the latter …

It has been suggested that birds migrate faster in spring than in autumn because of
competition for arrival order at breeding grounds and environmental factors such as …

Consistent with a warming climate, birds are shifting the timing of their migrations, but it
remains unclear to what extent these shifts have kept pace with the changing environment …

Climate change has led to shifts in phenology in many species distributed widely across
taxonomic groups. It is, however, unclear how we should interpret these shifts without some …