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BEHAVIORAL RESPONSE OF MULE DEER TO A HIGHWAY UNDERPASS
A concrete box underpass 3.05 x 3.05 m (10 feet) and 30.48 m (100 feet) long under Inter-state 70 in west central Colorado was monitored for deer use during 4 years following its completion in early…
Mule deer responses to deer guards.
Highlight: In this investigation the effectiveness of guards 12, 18, and 24 feet long in preventing mule deer from crossing vehicle openings in fences 8 feet high was evaluated. The guards were…
NEONATAL MULE DEER FAWN SURVIVAL IN WEST-CENTRAL COLORADO
It is hypothesized that fetus mortality during late pregnancy or mortality of fawns at birth (before they could be detected for capture) as potential causes of poor recruitment of mule deer populations resulting from apparent low recruitment.
Aerial counting experiments to estimate pronghorn density and herd structure
There is undercounting bias in wide strip surveys and quadrats offer acceptable precision and may be the least biased of any method tested for estimating population size and herd structure concurrently during the same aerial survey in late summer.
Effectiveness of a Lighted, Animated Deer Crossing Sign
Two lighted, animated deer crossing signs were installed adjacent to State Highway 82 south of Glenwood Springs, Colorado, delineating a 1.61 km (1-mile) segment of highway where deer-vehicle accidents frequently occurred, and their response in the form of speed reduction and/or increased awareness was not sufficient to affect the crossings per kill ratio.
Use of One-Way Gates by Mule Deer
Gates designed to allow passage of mule deer in only one direction were tested under controlled and field conditions and two gate types had significantly changed their behaviour.
LONG-TERM TRENDS IN MULE DEER PREGNANCY AND FETAL RATES IN COLORADO
It is concluded that failure to breed or maintain pregnancy through at least early January or early February does not appear to be the cause of low f:d ratios observed in Colorado.
Recurrent Estrus and Cycle Length in Pronghorn
A comparison of the physical condition of four deer herds in New York according to several indices and the importance of kidney fat as a predictor of body condition in white-tailed deer is presented.
"Deer crossing" signs may prove valuable in reducing accidents and animal deaths
A section of coloado highway with the highest frequency of deer accidents per mile in the state was chosen and a reflectorized diamond sign with "deer xing" in neon lights was compared, which resulted in a small, but statistically significant reduction in traffic speeds past the sign.