An online resource based on the award-winning nature guide

Eastern Coyote

Porcupine Preyed Upon By Coyotes

2-15-16 dead porcupine  086Coyote tracks from several directions coalesced in a spot where the frozen skin of a porcupine lay. There was not one morsel of flesh, and next to no bone, left inside the skin, which had partially been turned inside out.  Inspection of the porcupine’s head confirmed the likelihood that coyotes were responsible, as fishers, notable porcupine predators, kill their prey by repeatedly attacking a porcupine’s head, and the head of this porcupine was unscathed (see insert). The only other possible predators would be a bobcat or a great horned owl, and there were no signs of either present. While it is possible that the porcupine died a natural death and opportunistic coyotes took advantage of an easy meal, it appeared to be in good condition, and thus it is equally or more likely that coyotes succeeded in gaining access to the porcupine’s vulnerable, quill-less belly, and successfully attacked and ate it.

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Female Eastern Coyotes In Estrus

1-27-16 coyote in estrus 036Female Eastern Coyotes come into estrus only once a year, usually in late winter for two to five days. For two or three months prior to as well as during this time, males roam widely and scent marking by both males and females increases. During their mating season, coyotes often travel in pairs, and it is not unusual to find scent posts where both male and female have scent marked with their urine. (The female’s urine is often tinged with blood.) The percentage of females that breed in a given year (typically 60% to 90%) depends upon the availability of food and their physical condition.

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Scat Revelations

12-14-15 coyote scat 021Predators and scavengers of all stripes are reaping the benefits of deer hunting season. A close look at the composition and form of the pictured scat reveals much more than the fact that a coyote dined on a white-tailed deer. Note that the scat consists almost entirely of deer hair. When a predator such as a coyote comes upon a carcass, it tends to eat the internal organs first, which produce black, moist, soft scats with next to no bones or hair in them. As it continues to feed, the coyote’s scats contain more and more bones and hair, until eventually that is all they consist of.

There are two conclusions one could make when analyzing this scat. One is that the coyote whose scat this is was finishing up the tail end of a deer carcass. It is also possible that this coyote might not have been at the top of its pack’s hierarchy. The alpha pair usually has first dibs on the internal organs, with lower members of the pack having access to the less choice parts, such as hair and bones.

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