Author: A. Rentner

Beware of winged tyrants

Think of the word tyrant. Who comes to mind? Ivan the Terrible, Atilla the Hun, maybe Vlad the Impaler? How about the Western kingbird? It and more than 400 other passerines, or perching birds, in the largest bird family on...

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Takes a lot of gall

Imagine an insect capable of changing a living cell from what it already is to what it wants it to become, a gall. There are such bugs. They are called gall-inducers because their larvae exude hormones that can convert the...

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Wise guys galore in springtime

The refuges are rife with wise guys. Baby great horned owls are peaking over the edge of their nests at bird watchers passing below while their wise old parents stay near. Great horned owls, the same as featured in storybooks...

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Antlers are important, no bull

Dominant male Tule elk have huge antlers spanning several feet in width and height. Magnificent appendages that are used in battle with other bulls during rut (the elk’s breeding season), antlers are almost always a part of any...

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