I need merely to look out my cabin windows to see it all around me — among the deer, horses, and red-winged blackbirds, among the raccoons, steers, and bluejays. It’s the unending struggle by each species to maintain its pecking order.

100_0842_112501116.jpgThe pecking order — which is sometimes called “dominance hierarchy” or “social hierarchy” when talking about humans and other mammals — takes its common name from the fact that it was first observed among poultry.

As Wikipedia explains, “The top chicken is one which can peck any chicken it wants. The bottom chicken is one that lets all the other chickens peck on it and stands up to none. There are chickens in the middle, who peck on certain chickens but are, in turn, pecked on by other chickens higher up on the scale.”

Like other young animals foxes play fight to establish dominance. I photographed these red foxes across my fence on neighbor Toby Giacomini’s land. The fox described below was the locally more-common gray fox.

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You can observe pecking orders in prisons and schoolyards. In his 1960 novel One Flew Over the Cuckoo’s Nest, Ken Kesey (1935-2001) portrays a sane man, RJ McMurphy, who cons his way into a mental institution to avoid a short prison term for petty crimes. Once in the institution, McMurphy immediately asks his fellow wards America’s eternal question, “Who’s the head bull-goose loony around here?

Pecking orders are more pronounced among some species than others, I’ve observed. With red-winged blackbirds, for example, maintaining their chosen spot at the feast of birdseed on my railing is more important than eating it. Brown towhees and Oregon juncos, on the other hand, worry far less about who’s at the head of the table.

I once asked Point Reyes Station naturalist Jules Evans why some birds are more aggressive toward their own species when feeding than are other birds. Evans said he wasn’t certain but theorized that birds whose diets are limited to certain food would likely protect it more aggressively than birds that eat a wider variety of foods.

While social hierarchies are supposed to exist within a species, there are obviously similar hierarchies among species.

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The cutest little roof rat you ever did see stretched like a first grader at a drinking fountain to get a drink from my birdbath at twilight Thursday.

Last week, I was watching a towhee pecking at a scattering of birdseed under my picnic table when a roof rat ran out from behind a flowerpot and drove the towhee off. I’d never seen such a thing before, but the towhee seemed unfazed. It merely hopped three feet away and started in on another scattering of seeds.

To some extent size determines which species dominates which. A possum will scurry off if a raccoon shows up. But as I observed Tuesday night, a raccoon will flee a much-smaller fox.

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Usually, confrontations between raccoons themselves are limited to growling and — like blackbirds —fluffing up to look bigger.

But I’ve also seen raccoons fight, and they were savage.

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Although raccoons have fearsome canine teeth, the little gray fox I saw Tuesday clearly had a much-larger raccoon buffaloed — if you can stand the metaphor. And even if you can’t, this column is over. But if someone knows why a raccoon would be afraid of a fox, please send in a comment.