Subspecies and protection
Paul Cherubini
cherubini at mindspring.com
Mon Oct 16 10:22:59 EDT 2000
Mark Walker wrote:
> Bottom line: Monarchs can and do (at least occasionally) fly over the
> Sierra Nevada - even at it's highest point.
In addition, a little northeast of Mt. Whitney is the White
Mountain Range. Butterfly naturalist Derham Giuliani has
seen monarchs and painted ladies in the summit area of
White Mtn. Peak, elev. 14,246 feet. Also, world famous
pigeon homing researcher Klaus Schmidt-Koenig
has reported seeing monarchs at 11,200 feet in both the
California White Mountains and Colorado Rockies.
In central Mexico, 100,000,000 monarchs overwinter in the
10,000-11,000 foot altitude range near the summits of volcanic
mountains:
1986
1986 FIR TREE
MONARCH COLONY DENSITY 1986
COLONY SIZE TREES / ACRE ALTITUDE
Chincua 1.30 acres 251 trees/acre 10,712 feet
El Rosario 5.08 acres 102 trees/acre 10,794 feet
Picacho .66 acre 175 trees/acre 11,253 feet
Chivati-Huacal .44 acre 127 trees/acre 10,151 feet
Cerro Pelon 1.21 acres 36 trees/acre -
Herrada .17 acre 290 trees/acre 10,761 feet
Palomas .37 acre 188 trees/acre 10,876 feet
Paul Cherubini
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