Abstract The North American Breeding Bird Survey (BBS) was established in 1966 in
response to a lack of quantitative data on changes in the populations of many bird species at …

Nonrandom collecting practices may bias conclusions drawn from analyses of herbarium
records. Recent efforts to fully digitize and mobilize regional floras online offer a timely …

Abstract The vision of Chandler (Chan) S. Robbins for a continental-scale omnibus survey of
breeding birds led to the development of the North American Breeding Bird Survey (BBS) …

Abstract The North American Breeding Bird Survey is a roadside, count-based survey
conducted by volunteer observers. Begun in 1966, it now is a primary source of information …

The effects of roads on wildlife populations are widespread and well documented. Many
studies have shown that bird abundance, occurrence and species richness are reduced …

Conservation planning requires extensive amounts of data, yet data collection is expensive,
and there is often a trade‐off between the quantity and quality of data that can be collected …

Small passerines, sometimes referred to as perching birds or songbirds, are the most
abundant bird group in the United States (US) and Canada, and the most common among …

Citizen science databases are increasing in importance as sources of ecological
information, but variability in effort across locations is inherent to such data. Spatially biased …

Avian diversity is under increasing pressures. It is thus critical to understand the ecological
variables that contribute to large scale spatial distribution of avian species diversity …

Predictive models of species distributions are typically developed with data collected along
roads. Roadside sampling may provide a biased (nonrandom) sample; however, it is …