CNHP has conducted breeding bird surveys for a host of land managers in
Colorado, helping biologists understand what species exist where and in
what density. Such surveys at the U.S. Air Force Academy and Buckley Air
Force Base were essential for clarifying the distribution and abundance
of breeding birds on these installations.
The dramatic decline in bat populations has triggered a need to better
understand the status of bat populations throughout North America.
Since white-nose syndrome began its spread in 2006, some species have
lost millions of individuals, while others seem to be somewhat immune.
Those individuals where declines were precipitous, most evidence came in
the form of masses of dead bats at the opening of caves and mines in
eastern North America. In the West, we do not have such concentrations
of bats and must rely on monitoring diversity and population status in
alternate ways. One way CNHP has been monitoring bat populations is by
partnering with Colorado Parks and Wildlife to record bats’ ultrasonic acoustic calls and using those to identify
what species exist where in Colorado.
In an effort to understand the distribution of rare and lesser-known bats,
rodents, lagomorphs, and insectivores, CNHP embarked on a state-scale
inventory for these small mammals. Starting along the Front Range,
then the northwest, southwest, and south-central sections of Colorado,
CNHP conducted capture effort throughout the appropriate habitats in
these areas. From this work came a new understanding of species’
distributions (Siemers et al. 2006), and information for state and
federal land managers to address conservation.