Category Archives: Mammals

Deer and Antelope Play

Leonard and I really do live “where the deer and the antelope play”. These “antelope” of musical fame are actually pronghorn (Antilocapra americanna), not antelope, as they are commonly called. But we all incorrectly call them antelope. At the Ash … Continue reading

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Coues Whitetail

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The coues whitetail (Odocoileus virginianus couesi) is a subspecies of the common eastern whitetail (Odocoileus virginianus). It is a denizen of mountain ranges in Arizona, New Mexico and Mexico. It can be found between 3,500 and 9,000+ feet in elevation … Continue reading

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Bergmann’s Rule

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Bergmann’s Rule (the third ecographic rule) was formulated in 1847 by Karl (also seen as Carl) Bergmann (1814 – 1865), a German biologist. It states that the same or closely related species tend to be larger in colder climates. It … Continue reading

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Allen’s Rule

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There are three principal Ecographic Rules for terrestrial environments: Allen’s Rule, Gloger’s Rule and Bergmann’s Rule. Ecographic Rules are concerned with variations in traits (mainly morphological) of organisms over goegraphical gradients. Allen’s Rule was discussed previously. (see “Gloger’s Rule” 10-10-16) … Continue reading

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Yellowjacket Nest

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This month Leonard and I were walking at Little Lavas near Modoc National Forest Road 56 (Modoc County CA) when we came across a underground nest dug up by some animal. The papery combs were scattered around the underground hive … Continue reading

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Are You My Mother?

Throughout the summer a mule deer (Odocoileus hemionus) doe and her fawn visited our yard (near Lookout CA, Modoc County) almost every day. (see “Mule Deer Fawn” on 08-13-2013) They made the rounds eating our pear and plum trees, grape … Continue reading

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Bobcats (Lynx rufus) have well-defined territories marked with urine scent, feces and clawing. Males will tolerate other males where their territories overlap, but females generally do not permit other bobcats to trespass. Each bobcat has several areas within its territory … Continue reading

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