Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
Lemmus trimucronatus
John O. Sallivan
Barrow, Alaska
1962
8 June Lemmings seem to be scarce at present. Mullen
has 4 of them in the animal colony.
9 June Cade and Weber had captured some
lemmings in the drum area by turning
over the snow with shovels - uncovering -
and grabbing the animals. Mullen,
Piper, Stevens, and I tried it this after-
noon. We turned over shovelfuls - which were
melted and fairly soft - the day was
very clear, sunny and warm (around 46°).
The hunt was successful: 10 lemmings
were captured. (from around 1600-1700).
Stevens and I went out again after supper
and caught 7 more in this way + 2 in the
live traps - total of 9. (19 for the day).
The drum area is cross-crowed by shallow
ditches (wet) with slightly higher (dry)
ridges in between. The lemmings were
under the snow on the ridges. Stevens and
I developed a couple of new elaborations
on the method: Trample down the snow
from one ditch to another,
isolating a portion of ridge -
by collapsing connecting tunnels.
Then turn over the snow in between. This
was fairly successful. Also have on dig
at one end - the second watch at the period