I know Peregrines are seen on the summit of Burrough's Mtn. in Mount Rainier National Park. Do they range higher in other areas of the Mountain? How about other tundra zones areas in the State of Washington? (I'm assuming they do not prey on the Common Raven's on the summits, but do not know this!)
Burrough's Mountain is at about 2,300 meters, or 7,300 feet, and is probably at or near the upper limit of the tundra zone in the State of Washington.
It seems that the altitudinal range of Peregrines would include the tundra zone in the Rockies, which must be well above 12,000 feet! That would indicate that the Peregrine's altitudinal range in this state is limited by the elevation of the tundra zone rather than some fixed elevation.
Is the Altitudinal Range determined by physical limitations of the bird or rather the altitude of habitat?
---John Allinger
Clark County, Washington
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