Hayden's Shrew - Sorex haydeni
General Description
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Diagnostic Characteristics
See carraway (1995) for a key to western north american soricids based primarily on dentaries.
Distribution
Montana Range
Observations in Montana: 50
Montana CountiesBig Horn, Carter, Chouteau, Dawson, Fergus, Lewis and Clark, McCone, Musselshell, Park, Pondera, Richland, Roosevelt, Sheridan, Sweet Grass, Teton, Treasure, Valley
Migration
NON-MIGRATORY
Habitat
MORE PARTIAL TO GRASSY HABITATS THAN IS S. cinereus - WHICH PREFERS FOREST AND WOODLAND. PARTIAL TO MOIST HABITATS. YOUNG PROBABLY BORN IN SPHERICAL NESTS 4-5 IN. DIAM. CONSTRUCTED OF GRASS.
Food Habits
INVERTEBRATES & SMALL VERTEBRATES. SOME VEGETABLE MATTER. SEEDS MAY FORM THE BULK OF THE WINTER DIET.
Ecology
MAY CONSTRUCT SHORT TUNNELS & RUNWAYS. SIGHT & SMELL APPARENTLY WELL DEVELOPED BUT MAY ALSO USE ECHO LOCATION.
Reproductive Characteristics
PROBABLY SIMILAR TO S. cinereus. INDIV. SHREWS USUALLY DO NOT LIVE BEYOND 14 MO. & USUALLY PRODUCE 2, RARELY 3 LITTERS IN A LIFETIME. YOUNG WEANED AT ABOUT 20 DAYS.
Citations & Sources
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