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Gandl K’in, Haida Gwaii (Queen Charlotte Islands) supports an unusual maternal colony of Keen’s long-eared myotis and little brown myotis. Hot water from geothermal springs flow through crevices and under boulders creating warm, moist conditions for roosting bats. Some boulder roosts are unique in that they are in the upper intertidal zone and are periodically flooded by extreme tides. The pattern of seasonal use strongly suggests that the thermally heated roosts are important during pregnancy and lactation, but the bats roost elsewhere once the young are volant. Emergence counts confirmed that at least 110 adult bats used the Gandl K’in roosts during 1998, which is similar to the 140 adults and young estimated in 1991. The 2 species were present in approximately equal numbers in both 1991 and 1998, which suggests they are coexisting with minimal competition. Roost sites do not appear to be limiting, and the preliminary results of feces analysis suggest that different foraging behaviour may be minimizing...
Burles, Douglas, W.. 1999. Bats of Gandl K'in (in Proc. Conference Biology & Management of Species and Habitats at Risk). Ministry of Environment, Lands and Parks. Conference Biology & ManagementProceedings. Vol. 1
Keywords: hot springs, Keen’s long-eared myotis, little brown myotis, Myotis keenii, Myotis lucifugus, roosts, Gandl K’in, Haida Gwaii, Queen Charlotte Islands, habitat
ISSN:
Scientific Name: Myotis lucifugus, Myotis keenii
ISBN:
English Name: Little Brown Myotis, Keen's Long-eared Myotis
Other Identifier: University College of the Cariboo
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