This is 1 meter resolution landcover map developed for the RMBL Spatial Data Platform. Source datasets include 2017 and 2019 4-band imagery from the National Aerial Imagery Program, and 2019 LiDAR data collected by Quantum Geospatial for the Colorado Hazard Mapping Program. The numeric codes for the

This map represents the estimated on-road and off-road travel time in minutes from Crested Butte via the fastest travel means available (snowmobiles excluded). Estimates apply for summer (snow-off) conditions after all roads have been opened to vehicle traffic. This map was generated with the cost d

Queen bumblebees (Bombus appositus) leave nectar behind in Delphinium nelsoni flowers with high-standing crops of nectar, and residues predicted by an optimal feeding hypothesis agree with field measurements.

It is suggested that bumblebees foraging for pollen may not perceive revisitations and their associated costs because they do not assess pollen returns on a per plant basis, and energetic-efficiency arguments predicting the pattern of foraging movements among plants may be inappropriate.

Predictions of the three hypotheses concerned with hunting by expectation were tested experimentally by varying the quality of plants (amount and distribution of nectar) encountered by bumblebees (Bombus appositus).

Key factor analysis techniques were used to examine factors determining the abundance of a population of non-pest Colias, finding factors resulting in reduced natality and mortality during larval diapause determine the population trends for C. alexandra.

The data support either the view that the D. pulex species group is one widespread and variable species, or that it is comprised of a much larger number of species than presently recognized.

Female use of nutrients donated by males at mating, and complete sperm precedence, in Colias eurytheme Boisduval are documented.

In a laboratory experiment, female white-crowned sparrows responded almost exclusively to male songs taken from their home dialect region and usually not to songs taken from an alien dialect region. Song dialect populations may represent a level of genetic population structure below that of the subs

Analysis of life-history traits of 18 species of burrowing sciurids indicates that reproductive effort is determined by body-size energetics, and sociality in these species may have evolved through retention of daughters within the maternal home range as a means of continuing reproductive investment

Feeding rates, time of feeding, and prey choice of brook trout (Salvelinus fontinalis) were studied in Cement Creek, Colorado, in 1975–77. On each of five dates from early June to late September, I collected trout at intervals over a 24-h period, along with samples of invertebrate drift and benthos.

North American Pine Grosbeaks (Pinicola enucleator) vary geographically in two of their call notes. Variation is greatest in the location calls that communicate between individuals at great distances. Birds of the taiga and coastal Alaska give whistled calls, of which four categories have been ident