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Zoology

Journal of the Minnesota Academy of Science

Nature observation

Publication Year

Articles 1 - 4 of 4

Full-Text Articles in Animal Sciences

White-Tailed Deer In Southeastern Minnesota: Winter Observations, Robert D. Dorn Jan 1970

White-Tailed Deer In Southeastern Minnesota: Winter Observations, Robert D. Dorn

Journal of the Minnesota Academy of Science

Food habits, movements, vegetation type use, and bedding of white-tailed deer (Odocoileus virginianus borealis) were observed while snow-tracking in southeastern Minnesota. Waste corn (Zea Mays) was the most important food item. Three dogwoods (Cornus racemosa, C. rugosa, C. alternifolia), all non-commercial forest species, were the most important for browse. Acorns were unavailable due to crop failure. Six trails made in less than 24 hours covered more than 1 mile each, straight line distance. The longest was 31/s miles. Snow did not appear to affect movements. About two-thirds of the beds were on wooded uplands. Browsing areas appeared dependent on bedding …


Looking At Wolves As Scientific Subjects Rather Than As Storybook Villains, John Mcclung Jan 1970

Looking At Wolves As Scientific Subjects Rather Than As Storybook Villains, John Mcclung

Journal of the Minnesota Academy of Science

Minnesota researchers, attempting to separate objective data about timber wolves from emotional attitudes, are compiling information gathered over a period of several years in the state's north woods. Findings suggest that laws to protect and preserve this animal may be as necessary as programs to control predations on deer or domestic livestock.


Survival Of Hand-Reared Mallards (Anas Platyrhynchos) On Artificial Farm Ponds, Lawrence L. Thomforde Jan 1970

Survival Of Hand-Reared Mallards (Anas Platyrhynchos) On Artificial Farm Ponds, Lawrence L. Thomforde

Journal of the Minnesota Academy of Science

The survival of hand-reared, game-farm mallards released on artificial farm ponds was studied in Goodhue County, Minnesota. Of the 300 ducklings released each year from 1965 through 1967, an average of 45 per cent survived until most were capable of flying. More ducklings survived when released on ponds fenced from livestock than on unfenced ponds. Grazing livestock severely reduce cover vegetation around unfenced ponds. A total of 3.7 per cent of the bands were recovered. The first year recoveries represent 64 per cent of all the bands reported. Thirty-nine per cent of the band recoveries occurred within 15 miles of …


Radio-Tracking The Movements Of A Young Male Raccoon, Frank J. Turkowski, L. David Mech Jan 1968

Radio-Tracking The Movements Of A Young Male Raccoon, Frank J. Turkowski, L. David Mech

Journal of the Minnesota Academy of Science

Movements of o young male raccoon (Procyon lotor) were studied for four months in 1965 through the use of an automatic radio-tracking system. Data for 135 days were collected, and 2,065 locations were recorded. The study animal usually rested throughout the day at different sites. Nightly activity usually began within an hour before or after sunset and ceased within an hour before or after sunrise; the mean duration of the active period was 9 hours and 5 minutes (S.E. = 19 minutes). Nightly movements varied both in extent and areas visited. The raccoon visited a certain cornfield on 87 per …