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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