dispersal behavior | Coyote Yipps

Sibling Best Friends Become Arch Enemies

I missed capturing the first skirmish in this battle, and when I finally turned on the video camera, the three coyotes were in a standoff — standing absolutely still, facing each other, tense, waiting, daring an interaction, prepared for the other’s next move. There was no physical activity during this time; the activity was all psychological and internal. They held this stance for many minutes. I cut out that long section from the video, but know that for several minutes before this video begins, that was going on. The video actually begins right before a snarl that leads to more fighting.

On reflection and with hindsight, all the activity of that early morning was headed in the direction of this showdown. Instead of their normally exuberant playing, exploring and hunting, the two coyotes I was observing in the video remained fairly immobile, with their eyes fixated on a far-off object which I could not see. That they remained this way for more than 15 minutes, with just slight movements, should have been a dead giveaway as to what was going on. These two were waiting for any false move or “moving in” from the coyote they were watching. And that coyote, no doubt, was watching them just as intently, assessing what his own next moves would be, and what theirs would be, possibly daring the situation into a showdown.

Finally the two rushed up apparently to head off the third coyote who decided to enter this area, and that’s when the first skirmish occurred.

The fighting here includes snarling, teeth displays, raised hackles, intense biting and punching, jumping on, charging and slamming against, and brutal tail-pulling by two siblings, a brother and a sister who joins him, against a third brother who cries out in pain (about :44) and fights back, but who ends up running off after the showdown. The sister’s behavior is interesting and I’ve seen this before: a subordinate coyote joins in the fray led by an aggressor in ferociously attacking a third. In a couple of cases it made sense because there had been a bit of antagonism between the two subordinates, but I’m not sure this is always the case. Maybe the sister was primed instinctually to team up with the would-be-winner as a population control mechanism? I’m speculating because I don’t totally understand this why a third would join in.

This fighting is not a simple family spat to resolve who gets what or who sits where: those issues are worked out by hierarchical behavior which is less intense. This fighting here, in its consequences, will decide fates and destinies that will be monumental for the lives involved. It will decide who gets to live a privileged continuance of patterns and routines he has known all his life and within a territory which he knows every inch of, and who will be put at risk for hardship, survival and even death by traveling away from the familiar and into the unknown through hostile territory (with unfamiliar routes, cars, other territorial coyotes, people), where food and water also will be scarce and hard to find.

That’s the physical side of what’s going on, but there’s also an emotional side: that of finding oneself all alone and self-dependent after a life of intense family interactions, companionship, and mutual care. Dispersal can be a trying time, and it is often initiated like in this video. This rivalry here hasn’t been going on for too long — these fellas were still buddies less than a month ago. The rivalry has reached a crescendo now. Hopefully the underdog is resilient and lucky and will survive and become a stronger individual through his uncharted trials.

Already the siblings in this family are down to three from seven. One was killed by a car when under a year old. Two were found dehydrated and beyond help (I’m told by ACC), probably poisoned by some human element — possibly car coolant left out in the open. A fourth female recently picked up and left amicably of her own accord. She was the one who had always held back and was not totally a part of the fun of the others.

And now it appears that this brother has to go: there’s no room in one territory for the two males, and the remaining sister has taken sides. Eventually these last two siblings will also leave, and I wonder if they will go off as a pair: I’ve seen that inbreeding is not so uncommon in coyotes. Because of dispersion, we are not overpopulated with coyotes. At this point, these particular yearlings are 16 months old.

Beatings: Rank Issues Leading To Dispersal

Summary: I describe a beating and associated behaviors that appear to be leading to dispersal, and I speculate about the role of hormones in this process.

The evening of observations began uneventfully: three coyotes sitting in various locations, within view of one another, but several hundred feet apart. Then a siren sounded. Mom got up and after a moment of bobbing her head up and down emitting a few barely audible grunts — a sign that she was thinking of howling but hadn’t quite arrived there yet — she began to howl. Interestingly, the normally enthusiastic female yearling did not join in, and the 6-month old male pup only produced one long clear note and then stopped. These are the three coyote players in my posting today. “Okay”, I thought, “something’s going on.”

The next thing I know, Mom walks over to Yearling Daughter who, upon seeing her mother coming towards her, crouches low and remains motionless with a fearful expression on her face. Mom walks stiffly and stands over Daughter threateningly, with hackles up, stiff and erect tail, teeth bared, lips curled back, and narrow-slit eyes. With only minor repositioning of themselves, they remain this way for over a minute, though it seems like forever. During a millisecond of Mom’s inattention — though Mom may have allowed this — Daughter slithers out from under Mom, crouching low and keeping her rear-end tucked in. Looking at these photos later, I could see that before I had arrived in the park, there had been a battle: Daughter had a bleeding mouth and a bleeding tear under her chin.

Six-month old male pup then walks over to his older sister inquisitively but leaves it at that, and then all three coyotes walk away from one another and lie down again in separate areas. Eventually, Daughter rises and heads over to join her younger brother, possibly for the greeting which hadn’t taken place a few minutes before. As she does so, Mom immediately gets up and jolts over to them, and as she does, both offspring descend into the sand pit and I’m cut off from seeing them for a few seconds. Immediately, I hear a squeal of pain, and growling and shuffling in the sand pit. I run over and take this intense video:

Not only is Mom beating up on Daughter, brutally shoving her with the side of her body, hovering over her, punching and biting her, but her 6 month old son — normally a buddy of Daughter’s — has followed Mom’s lead and is doing the same thing, just as fiercely. The scene is intense.

As seen in the video, finally Daughter extracts herself and runs off, but Mom races after her and slams her down one more time, in a way that suggests, “You better just watch yourself”. Daughter sits still, appearing to shrink into herself for protection and maybe to make herself look smaller, and finally she is left alone. She then runs off, distancing herself from her mother and lies down to rest. Now I’m able to see her numerous fresh wounds, and I can see that she’s utterly dejected. She puts her head down and closes her eyes several times.

Meanwhile, Mom heads back to sniff the areas where the altercation took place, and then walks intimidatingly past the daughter who remains prone and still, hugging the ground, so as not to further raise her mother’s ire. 6-month-old pup keeps his distance from both coyotes. Sirens sound again, and this time Mom and 6-month old pup hop up and howl, but the normally spirited little Yearling Daughter does not join in at all. I don’t know if this was of her own accord, or if she had been *told* not to participate.

After a time, Mom and son head off on their evening trek. Daughter watches them go and remains where she is as the two of them disappear into the distance. She then gets up and goes the other way, limping, and ends up in some tall grasses, where her yearling twin brother comes by and touch noses with her. The 6 month old pup reappears and, true to form, follows the older brother’s lead in touching noses with her. Is the 6-month old simply conforming to the behavior of his elders?

Associated Observations and Speculations about the role of hormones in this process:

Coyote yearlings are maturing into adults with increasingly independent drives which appear to be upsetting the established social order in their families. Coyotes live in highly structured families on exclusive family-owned territories. They have a rigid hierarchy for maintaining social order and for maintaining territories with low population densities. Here are some of my additional observations of behaviors that appear to be associated with the beatings, along with some of my speculations.

1. Yearling Daughter appears to have become too independent and too much of a leader. She has been out in the forefront often, leading the others. For instance, it’s this daughter who has figured out where scraps of food can be found, and she always gets there first and eats first, and she’s the one who leads the others there. Could this type of upstart leadership be a threat to Mom, and might Mom sense this as a threat to the whole family? Aside from the leadership question, might Mom consider that particular location dangerous (having dangerous dogs or people) and therefore warrant putting an end to going there? One of the recent *beatings* took place at this location. The result: Daughter does not venture over there anymore.

2. Youngsters are disciplined in order to maintain social order. The discipline is often severe: tough action speaks louder than tough words! In the video, Mom’s harsh lashings could be aimed at squelching an intensifying hierarchy dispute between the stronger yearling and her 6-month old sibling. Younger son’s participation may simply be *getting back at* his sister for previous incidents against him. However, the picture actually looks much bigger than this one incident.

3. Deference towards Mom by Daughter has been sliding recently. Kowtowing and submission is now being forced by Mom instead of being a willing component of the daughter’s behavior. Interestingly, mom no longer grooms Daughter, even as she continues to groom all her other offspring, be they yearlings or this year’s pups. Is the mother distancing herself from this offspring? Mom’s “beatings” as seen in the video have served to demote the female to lowest man on the totem pole — even below the much younger 6-month old son. Ever after I took the above video, Mom, if she’s there, puts Daughter down for pulling rank on ANY of the other family members. The 6-month old pup has taken advantage of the situation to actually prod and poke his sister — literally. The 6-month old pup isn’t smart enough or strong enough to dominate his sister yet, but with Mom’s presence preventing Daughter’s reaction to the prods, he seems to have climbed above her in rank. So, Mom has knocked the female yearling down a few notches in her relationship to all others.

6-month-old brother, in the middle, has just prodded his yearling sister by poking her with his paw.

4. And, ever since the beating in the video, Daughter takes off running whenever she sees Mom coming from the distance, and most of the time sits on a little knoll far from the rest of the family when the rest of them congregate. Mom’s (and 6-month-old son’s) persistent antagonism is leading to Daughter’s increased isolation and exclusion from family events, though she still joins when Dad around.

5. The hierarchy issue appears big, but the ultimate result might be dispersal of the yearling, unless things change. Driving youngsters out is called dispersion, and it’s necessary, not only to keep the population numbers low enough to insure there are enough resources (resources are always scarce) for everyone who remains in the territory, but also to insure the smooth functioning of the family unit. There is no room for upstarts or two alphas.

6. Reproductive competition may be one of the biggest factors in the beatings and then dispersal. I’ve seen this same antagonistic behavior in another family between a mom and her daughter, and in a family between the father and his son. In all cases, the *upstart* yearlings were demoted to the very bottom of the established family hierarchy. I’ve observed that it’s mostly the mothers who drive the female yearlings out, and the fathers who drive out the males, though I remember seeing one father drive a daughter out. It makes sense: the dads do not want reproductive competition from a son, and the females do not want reproductive competition from a daughter.

SPECULATIONS, in the yellow box below, for those who might be interested in the hormone (or pheromones, as in urine) question:

7. SPECULATION ABOUT THE ROLE OF HORMONES: It has occurred to me that the *beatings* and *intimidations* may go on for another reason which falls short of actual expulsion of the youngster female from the family. We’ve all heard that, in any coyote family, only the *alphas* reproduce, yet yearlings often are allowed to stay in the family. Why don’t they reproduce? The *reign of terror* as you can see from the above video, is pretty strong. Although this would have to be explored by an endocrinologist, I do know that fear causes cortisol to rise in animals, and heightened cortisol, in turn, inhibits the production of reproductive hormones. Could this be causing the beta adult females in any family to become temporarily sterile? In this case, the *reign of terror* by the mother would be geared to insure that only she, the mother, the alpha female, will be reproducing within that family. Food for thought.

8. FURTHER SPECULATION: Could Mom’s behavior be triggered by her sensing a competitive hormonal state in her daughter? I’m throwing this out there as a possibility because, in this and in another family where I observed the same beatings, the mom was particularly interested in smelling the reproductive areas of her female daughter. It would be interesting to investigate this if it hasn’t already been.

If it is possible for menstrual cycles to align themselves when all-females cohabitate (all-girl dorms and nuns), it might not be so far-fetched to think that some form of hormonal communication could be occurring between female coyotes, and could be a factor in adult beta females remaining *behaviorally sterile* within coyote families. For instance, could one female’s strong hormones act to inhibit those of another proximate female? An alpha with strong hormones would be able to retain the status quo, but what might happen if a youngster’s hormone levels surged in response to Mom’s weakening hormone production as she ages? Would a mother’s *reign of terror* raise cortisol enough to scare a youngster’s endocrine system from producing?

There’s one more interesting factor here associated with hormones, I think. Females go into estrus and reproduce only once a year. The odd thing is that males, too, only produce sperm — spermatogenesis — at that one time of year. What triggers their overlapping schedules? More food for thought.

9. For the purpose of this posting, I’m not going to get into the different personalities and histories of each coyote in the family except to mention that *Dad* in this family has a fondness for all his pups and indulges each and every one of them: he grooms them, nuzzles them and shows them affection. The same affection is not conferred on Mom — he appears to have chilled towards his mate who he sometimes prevents from grooming him and who he never grooms: her advances for purposes of grooming/affection and even rank confirmation/testing seem to be rejected. In addition there frequently are growls and teeth baring between these two, including at his initial interactions with the yearling daughter. Simultaneously, Dad seems to soothe and comfort Yearling Daughter after Mom’s attacks sometimes. Might all of these little behaviors cause Mom to feel competition from Daughter? It seems to me that this could be a contributing factor in the alpha female’s need to drive Daughter to the lowest rungs of the group and maybe off.

10. The phenomenon of territoriality keeps the population density down. The territory in the case of this family is a golf course. You might think that golf-courses are large enough to be home to many coyotes and that they are ideal habitat, but they are not. In this particular golf course in the past, there was desperate internecine warfare between two coyote families. I’m told that the puppies of one family were killed off: this shows how severe the battles can be. There is room for only one family and the other family was forced to leave.

Golf courses are kept for golfers, not for coyotes, so overgrown foliage areas where rodents might live are cleared out regularly. The lawn/turf areas are not much better than plastic astroturf or concrete in terms of the foods they supply: they are cleared of gophers on a regular basis with one-way traps which break the gophers’ necks: not a pleasant death, but the point is that gophers are eliminated, and gophers happen to be one of the coyote’s staple foods here in San Francisco. So a golf-course serves mostly as a home base, not as a food gathering area. Coyotes trek further afield for most of their sustenance, into neighborhoods and other open spaces and parks. Coyotes actually trek further than their claimed territories, be they parks, golf-courses, or open spaces, no matter how dense the resources are. I’m simply suggesting that golf-courses are not sustainable food areas for coyotes.

Territories (home bases) and surrounding ranging lands only support so many coyotes: the population is kept low through the phenomenon of territoriality, as far as I’ve seen. In any one territory, grown coyote pups eventually disperse, or leave the territory between the age of one and two years usually, and those that don’t leave are betas who do not reproduce. Dispersal is necessary to keep the population numbers low enough to insure there are enough resources for everyone who remains.

12. What’s fascinating about this video is that the 6 month old pup has joined his mother in beating up his elder yearling sister just as vehemently as is the mother is. He’s always been a buddy to his older sister, following her, copying her, the two of them grooming each other, and she coming to his rescue/defense whenever she felt he was in danger. Now, suddenly, he has taken on his mother’s behavior and ganged up on his older sister. His survival, of course, depends on his aligning himself with Mom. And it is through copying that coyote pups learn. So, the sister gets beaten up. The sister is clearly traumatized both physically (see wounds I’ve circled in the photo), and emotionally. Puppy also suffered collateral damage, but only physically.

11. After the beating, the Yearling Daughter wanders off to be far away and acts dejected. Do coyotes have feelings? I myself have no doubt. You can figure out how they feel by the way you might feel under certain similar circumstances (see some of Carl Safina’s videos). This is not anthropomorphizing in the sense that purely human characteristics are placed on animals. These animals actually have these feelings which are best described by the language we use to describe our own emotions. However, it is anthropocentric for humans to believe that they are the only ones who feel things. Finding similarities is what helps people relate to wildlife — we need more of it, and less of a divide than what some academics have clung to. The new models are Jane Goodall’s and Carl Safina’s. More and more scientists are seeing animals as sentient beings who share many of our own, or very similar to our own, feelings and emotions.

The young female coyote has gone off to be alone, far away from further parental and sibling torment. The normally perky and energetic youngster here puts her head down, as though defeated. She stays off to herself. She doesn’t joint the next howling session. She doesn’t join the family for their rendezvous and trekking session. In fact, she trots in the opposite direction: she’s been excluded from participation in the family — shunned. Remember that family life is what they live for.

So she can’t join the fun and games: you can tell she wants to by the way she lurches forward just a little sometimes and then restrains herself. She behaves exactly like my dog when he’s been told to sit/stay, yet he wants to join the rest of us.

As I left the park this day, I heard loud squawking and branches rustling strongly in the branches way above. I looked up to see a red-shouldered hawk fighting with another red-shouldered hawk, and I wondered if dispersal was in the air. Nature is not always as kind or sweet as many of us might want to believe: it has its heartaches as well as its joys.

Four Month Old Pup Howls Back at His Family / Dispersal Behavior

This video is a very short (20 seconds) clip of a youngster coyote, a little over four months old, responding to the howls of his family after a siren had sounded. He is on one side of the park alone, independently and very self-sufficiently, exploring and hunting on his own. It’s late dusk and there’s almost no light, but the camera was able to focus on this. Notice that the youngster is listening intently for the rest of the family which is far in the distance, in back of where I’ve standing to video. When he thinks he knows where they are, he takes off in their direction, running.

Interestingly, as he approached them, he veered off and went the other way, never meeting up with them. The howling had stopped by the time he reached them. Might he have decided to avoid what was going on between them? There were four other coyotes who were at the site, including Mom, Dad and two yearling siblings born last year.

I say this because it’s at this point that I and another onlooker heard strong deep warning growls. We heard them again, and then a third time. It’s not often that we hear coyotes actually growl like this because it seems to be limited to use within the coyote world between themselves, apparently to express anger or discipline. Unfortunately my recorder did not pick up the low frequency sounds.

I strained to see what was going on but could only make out that one coyote had pinned another one down and was growling at it. By focusing my camera on the light in the background, I was able to get these two photos below. Once home, where I could actually see the image, I could tell clearly that Mom was standing over her yearling daughter, exercising her dominance. Dispersion time is coming soon for that young female. Punches, nips and dominance displays as this one will increase in order to drive the youngsters off. This is an important part of the coyote’s life cycle: it keeps the population down in claimed territories.

Interestingly, Dad still grooms this female for long stretches of time and very affectionately, reconfirming his bonds and affection for her. In the families I’ve observed, it seems to be the Moms that drive out the females (who I suppose could become competitive with them), and the Dads, or sometimes male siblings, who drive the youngster males out.