|
|
|
A prime bull caribou grazes on fall tundra, oblivious to the splendor
of Mt. McKinley (Denali) in the background.
Every late-August/early September, caribou bulls slowly migrate
to the western hills of Denali National Park in preparation for
the rut (mating) which occurs in mid-October. The cows and calves
have spent their summer in the general area (or migrating there),
but the bulls, being rather lazy, arrive just in time. The McKinley
herd, once numbering nearly 20,000, dwindled to about 500 in the
mid-'70s. Lately the herd has fluctuated near 1000. No specific
cause has been determined; the initial drop was probably due to
emigration, and caribou are subject to heavy predation by bears
and wolves, as well as to diseases and deep snow.
(OK, I'll 'fess up: I was a caribou researcher in Denali during
the late '70s) |
|
|