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Interpreting Evidence of Depredation of Duck Nests
in the Prairie Pothole Region

Appendix B, Table 1
Table 1. Distance (mm) between tips of both upper and lower canine teeth of principal mammalian carnivores of duck nests in the Prairie Pothole Region.^a

Females Males

Upper canines Lower canines Upper canines Lower canines

Predator n SD Range n SD Range n SD Range n SD Range

Coyote 12 30.2 2.0 27-33 6 27.7 1.5 26-29 10 31.2 3.2 24-35 6 26.0 3.3 22-30

Red fox 18 22.3 0.8 21-24 12 19.6 0.7 19-21 31 23.1 1.6 20-27 22 20.4 1.3 18-23

Raccoon 4 25.3 2.1 23-28 3 23.0 2.0 21-25 5 23.0 2.0 21-25 5 21.6 3.1 17-25

Stiped skunk 1 16.0 1 14.0 5 16.8 0.8 16-18 5 14.8 0.4 14-15

American badger 7 27.7 2.8 22-30 6 25.7 1.2 24-27 8 30.4 1.3 29-33 6 27.7 3.1 22-31

Mink 17 10.0 0.4 9-11 11 9.0 0.5 8-10 23 11.6 1.9 10-19 22 9.9 1.0 9-12

Ermine 4 4.5 0.0 4-5 6 4.1 0.2 4-5 27 5.5 0.6 4-7 29 4.8 0.5 3-6

Long-tailed weasel 7 7.8 1.0 6-9 6 6.0 0.6 5-7 8 8.4 0.6 7-9 4 6.9 0.9 6-8

^a Measurements are from intact and partial skulls of adult-size individuals of indicated species and sex from the Prairie Pothole Region in cataloged collections at the Biology Department, University of North Dakota, Grand Forks; Department of Zoology, North Dakota State University, Fargo; and James Ford Bell Museum of Natural History, University of Minnesota, Minneapolis, July 1992.

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