This gallery contains 2 photos.
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
Populations of horned larks (Eremophila alpestris) that breed in northern North America move south to the United States during the winter. Other horned lark populations are year-round residents throughout most of the states. These brown birds with black and yellow … Continue reading
This gallery contains 4 photos.
When there is snow on the ground, as has been the case in Big Valley the last few days, small flocks of horned larks (Eremophila alpestris) hug the ground at the edges of the roads. I think they do this for … Continue reading