It’s A Small World After All

A couple of days ago I visited the Presidio of San Francisco. I haven’t been going there regularly because the ecologist there is already monitoring those coyotes, but I went this time to check on the coyote I’ve labeled “Wired” — she had been radio-collared over a year ago. I heard she had moved in there and kicked out the previous family. This coyote indeed is a “toughy”. She is of special interest to me:  I had watched her wreak havoc on another coyote (who I’ve been documenting since her birth in 2015) and then pursue that coyote throughout the city for 6 months.

Second pair of coyotes in the Park

Initially I did not find the coyote I was looking for. Instead I found another pair of coyotes who looked surprisingly familiar. I’m trying to “place” their relationship among the coyotes I know. I generally can do so by watching visually for nuclear family similarities which I then hope to confirm with DNA analysis results.

I have been collecting DNA extracted from scat samples since 2008, to (among other things) help confirm my observations about relationships and movements throughout the city. The DNA analysis (Ben Sacks, Monica Serrano, et. al., UC Davis, 2020) has already shown that our present SF coyote population of 60 to 100 coyotes all came from just FOUR founding coyotes originating in Mendocino County: It appears that our SF coyote population is indeed inbred as I’ve noted and has not been augmented from the South.

Wired ran by — she’s radio-collared

When he looked at me I couldn’t believe my eyes. Was this Puff?

A couple of days later I returned to the Presidio and this time was rewarded with the appearance of Wired and her new mate! Wired hurried by with the male following close behind — she is obviously the leader of the pair. And then her mate turned around and looked at me. When you come across an old friend you haven’t seen in ages, in an odd place, your response might be, “Wow, it really is a small world!” This has happened to me with coyotes, and it just happened again! I could hardly believe my eyes! This appears to be the coyote I had labeled “Puff”. The label is based on his appearance and is used to differentiate him from his siblings when I write about them.

He was born in the spring of 2017 in a park that is not far off [I don’t state exact locations on this blog]. I’m including several photos of him (above) taken before he dispersed from his birthplace, along with photos of his mother and father on their territory there. I have DNA from these coyotes — I collect it right after it is expelled in most instances, so I know which coyote belongs to which sample. These will be used to confirm my visual/photographed observations. Puff has proved himself to be as much of a toughy as is Wired, having joined a brother to forcefully and viciously drive out a third brother from their birthplace in August of 2018, something I was able to observe. That’s how dispersal works.

It’s great to see Puff now paired up with a like-minded female (two toughies) and they appear to be the reigning alphas of their territory. It’s exciting to see these coyotes’ lives develop beyond their dispersal, something I’ve been able to do with only a handful of them so far. I don’t yet know what their relationship is with the other resident pair. They use some of the same territorial pathways, which I’m sure has significance for determining what the relationship is.

These two pairs may in fact be closely related. I say this, because otherwise, I believe, Wired and Puff would have driven out that second pair, but they have not. The previous Presidio pair along with their offspring were driven out. My continuing DNA study will confirm what their relationship is if I don’t figure it out beforehand.

So far, none of the coyotes I’ve been able to follow after their dispersal from their birthplaces has produced any offspring. Maybe Wired and Puff will produce the first 3rd generation that I’ll be able to keep tabs on! And there’s the possibility for a next generation in one other dispersed female I keep tabs on. We’ll just have to wait and see. Although I’ve watched yet another family through four generation (parents of parents of parents), there, the breeding pairs, one after the other, have remained stable and on their original territory the entire time — in fact for 13 years so far.

More recent movements within the city:

Among the four youngsters I’ve watched grow-up and then been pleasantly-surprised to see in other parks, are two that I’ve already written about, though I may not have used these labels: Scout and Hunter.

In addition to these dispersals, I’ve also seen family members travel large distances within the city to “pay a visit” or “check on” their dispersed youngsters (Maeve, Yote). I’ll soon be writing about a Dad who was just kicked out of his most recent territory and returned to where his youngsters were living. This male and his mate had dispersed from that territory (where the two youngsters remained), rather than the offspring (who did not leave/disperse) — it’s an interesting twist in things. Some family connections seem to be maintained over a great many years and over long distances.

By the way, Wired was in Puff’s birth-territory for awhile when he was still there. I don’t know if she is related to him, but there has been a long-standing association. I’ve also seen two other Presidio coyotes at Puff’s birth-territory. I wonder what the special tie is between these two family groups.


Endnotes: It’s very satisfying to have one’s visual observations confirmed by hard data (DNA). “Science” tends to accept only hard data, not visual data, though I have my photographs which indeed show connections. Incidentally, I do not use gadgets such as radio-collars or tags, which I think are harmful. I recognize coyote facially and can follow them that way, using sequences of photos to study any details. Except in a few instances, the coyotes I document are all labeled based on their appearance so I can readily know who they are.

A Coyote Visited My Home! by Christina

imag0139-2

Great blog! Recently caught a coyote on camera in the Aptos area very close to the house. We love coyotes but also have a cat we are concerned for. She’s sort of an outdoor cat, but we keep her in at night. Now she may have to be restricted to her catio while we’re away.

Our new outdoor game camera picked up the two images attached (one still; one movie) Thursday morning in the wee hours at our home in Aptos.  In the movie, he’s sniffing at our bedroom window.  We used to have a bird feeder attached to that window to entertain our cat but the feeder drew rats, not birds, and while that interested our cat it mostly just upset all of us.  (We kidded about it being a potential owl feeder as we have great horned owls in the oak trees nearby!)  I wonder if the coyote had caught rats here before and came for supper or if he heard us or saw the cat in the window.  We have a water basin in the back yard so when he turns to go around the house we think that may have been where he was headed.  This could explain why we haven’t seen the deer herd in our yard for the past week. They’ve probably distanced themselves from the coyote activity.

Note: Please read Melanie Piazza’s information on catios and how to keep your cat safe: Reversing the CATastrophe.

What Coyotes Do: Deliberately & Consciously Weighing A Risk

We were out on a trek this morning. I say “we” because I am allowed to tag along in the distance sometimes. Not always, and not even often by any means, but sometimes. Today I wasn’t given the “look” which says, “please don’t follow me”. It wasn’t an invitation to come along, but neither was it a “no, you can’t come.” So I tagged as far behind as I could without losing sight of him, as this male coyote made his circuit — or at least for most of it.

This is the last 1/2 minute of a 5+ minute howling session. You can hear *her* faintly in the distance at the end.

The day “for us” began with me finding him in his park howling in response to a siren as dawn broke. His mate responded from far, far off — barely audible, but distinctly her response. I’m sure he knew where she was. I did not, this time. She was obviously tucked away and safe, which gave him one less thing to be concerned about at that moment. So off he went, with me bringing up the rear at about 100 feet. It was very uneventful. We met few people or dogs and then only two at the very end of the trek.

Over hill and dale, within the park, we remained on a long path, he stopping to sniff now and then, and mark sporadically. At one point he pooped — diarrhea — and I wondered at the cause.

We came to the edge of the park, and here he paced along the edge of the road, watching out for traffic. Coyotes trek through areas much larger than their park territories — this is part of their daily behavior. As he began to cross the wide road, one car whizzed past. When this happened, he edged his way slowly and carefully back to the sidewalk, away from the car, where he stood very still and on full alert, with all of his senses focused and with every muscle taught and ready to respond. He had obviously gone through this experience many times and had learned to avoid the risks of quick-moving traffic. When the way was clear, still focused and tense, he crossed the road quickly and directly, and headed towards the long open space in back of the houses lining the street.

There were no fences between those apartments or between their backyards, so it was a perfect coyote-corridor. Here, he continued stopping, sniffing and marking the length of the very long block of connected apartments. He was always on alert. Sometimes he would stop longer at certain spots. Occasionally, nonchalantly, he turned his head, or head and body, just enough so that he could keep an eye on me.  This one knows I’m interested in him. He also knows that I’m not at all interested in getting close — it’s probably confusing for him. Other animals who would be interested in him would either be interested in him as prey, or in messaging him antagonistically. I simply didn’t fit the bill.

After about half an hour of trekking, he came to a fence with a plank missing. The gap was big enough for him to fit through. Should he try it? He spent well over a minute intently assessing the opening. His head would go forward and then he would withdraw it and look up and around in all directions, including at me. He did this maybe about 8 times, and finally, bravery won the day and he went through. I went up and examined the opening: the opening abutted the low support beams under a porch, and these were less than a foot off the ground. The coyote would have had to squeeze tightly and then bend to make it through. There was no chance for me, so I returned to the park, thinking my observations were over for the day.

But, within twenty minutes, who should come trotting up the path to the spot where I had first seen him howl in the morning, but Mr. Coyote himself! He continued along the path, now going in the other direction, somehow avoiding detection, between a couple of runners. He climbed a steep knoll where he then spent a few moments surveyed his domain — this “surveying” is a common coyote activity — and then he continued on his way, over hill and dale, through a field of waist-to-chest-high dense brush. I hurried over his lookout hill to the field below and was able to, at times, see his back as he slithered along, hidden by the bushes. When a dog and walker appeared in the distance, the coyote loitered behind one of these bushes until they had gone, and then he himself hurried along his chosen route and disappeared into a dense thicket, and I knew he had “gone in” for the duration of the day. His trek lasted a little over an hour.

slithering away in waist-to-shoulder high shrubbery

slithering away in waist-to-shoulder high shrubbery

Garbage Patrol

in a parking lot – rejected item – in the parking lot  
retained item – ten minutes of leaning up – peeing/marking
 

It was dark out, so the photos were blurry, and there was no feel for nighttime or darkness because the camera compensates for the lighting, making it look like daytime. So I experimented and came up with a lighting solution which really does give the viewer the right feeling I had when I took the photos — taken in the dark. Is this how things look in infrared? The tint seems to mask the graininess caused by low light.

Only about 2% of a coyote’s diet, as revealed by scat analysis, is composed of human produced items. Coyotes always prefer their more healthful, natural diet of rodents, berries and vegetation, but sometimes they indulge in “finds” for the change. Coyotes at times will visit picnic areas, trash cans and grocery parking lots where, if our trash is lying around, they will opportunistically pick things up for a special treat. I’ve seen them spit out stuff, so much of it is totally unpalatable to them. But some is enjoyed as you can see here.

On this particular evening, there was debris strewn in this parking lot, and the coyotes noted it as they trekked by. After briefly surveying the surroundings for safety, they did not hesitate to enter the area and went at it! Almost no one was around, and there were few cars — I guess the coyotes noted this, too, and that’s why they entered the parking lot. They wandered around, sniffing things on the ground — almost all of it was rejected and they’d turn their attention to the next piece of trash littering the ground. Finally I saw one of the coyotes pick up a plastic bag and run to the grassy edge of the lot with it. She spent a full ten minutes cleaning up whatever was in the bag. I guess that was enough for her because immediately left the lot after peeing on the spot where she had eaten. I have no idea what she had consumed, but  thought that it could have been the discarded portion of a burrito or sandwich.

leaving – walking down a street – about to cross street
something sumptuous found – keeping an eye on the moon? – rubbing her face
rubbing her back – crossing a street – body rub under some bushes
 

I followed her down several streets to a neighborhood residence where she went straight to a spot she must have known about, dug something up and nibbled on it. She stayed there eating whatever she found and looking around, and up, to make sure she was safe. She was there over ten minutes. My thought is that, since she went straight to that spot, she may have buried something there. When she finished she licked her snout, then went over to a patch of ground with grass only a few paces away and rubbed the sides of her face on it and then her chin. Hmmm — interesting! Then she got up and walked over to a bush which she used to rub her back against, back and forth: was she actually scratching her back, or was there an oder on the plant which she was trying to absorb? She then crossed the street where she found more shrubbery which she rubbed against and under, again, for a considerable period of time, as if she were wiping on, or wiping off, an odor.  Finally she trotted off, peed again, probably as a message, and was off and out of sight.

Trek, Far and Away, Beginning At Dusk

A few days ago, I was able to keep up with one of the coyotes I know as she began trekked at dusk.

caught a gopher

caught a gopher

She started out in a park where she found a gopher as she lingered, waiting for the day to fade. Then she headed out into a neighborhood street, with plenty of parked cars but no moving traffic. She picked up a couple of mice at the edges of driveways. She didn’t have to search for them — they were just “there”. She couldn’t have seen them. Did she hear them or smell them?  They were small and eaten quickly.

through a neighborhood

through a neighborhood

She then headed, decisively, to wherever she was going. She walked at a fast pace and kept her body high and tall — she was on high alert. She was amazingly tuned-in to her surroundings and the human world she entered as twilight set in. I’ve been told that pet dogs know their owners better than the owners know themselves. This is because they watch you all day! Well, coyotes don’t watch you all day, but they do watch us — from behind the scenes — and they learn our patterns.

middle of street

middle of street

She seemed to know where human perception lay, and that it wasn’t as keen as hers, especially at night. She knew when to stand still, when to duck down or simply walk behind a tree so that only part of her was visible — not enough to make her recognizable. Only one person saw her — amazed — “is that a coyote!” She stuck to the side of the road where she could duck into high grasses or shrubbery if she needed to — and she needed to three times, when three different cars went by. But she also wandered into the middle of the road several times, zigzagging right down the middle of it.

gopher in open space

gopher in open space

Her next stop was way down the street at an abandoned field where she hunted and caught another gopher. It took her only a short time to eat this, crushing the bones so the gopher could be consumed whole. Then she trotted assuredly onto a long church driveway. She seemed to know where she was headed. She moved along the driveway fairly quickly, stopping to sniff and “mark” in a couple of places, before climbing a hill at the edge of the church property. Here she hunted a little, but didn’t find anything.

dashing through a break in the traffic

dashing through a break in the traffic

She was now at the edge of a 6-lane thoroughfare. I thought she would turn back and descend the hill — but she waited there as the traffic whizzed by — she was hidden by the fading daylight and the darkness under dense trees. Then she took off — resolutely — across the street! “Oh, no,” I thought, “I’m going to have to watch her die”. But, as she crossed, the traffic magically parted for her. In fact, I was able to cross during the same brief break in the traffic. Her judgement and timing were excellent.  She got to the other side of the street and climbed the steep grassy embankment and was off down the next winding two-lane road. Please note that it’s much darker than the photos show — the headlights of the cars are on because they need them.

up an embankment through dense brush

up an embankment through dense brush

I exerted myself  to keep up but lagged behind because of the steep hill. When I got to the road she was now on, she was way way ahead — almost invisible in the dusk. I decided to give catching-up a try. I was able to do so because she stopped to examine and pick up some road kill — I think it was part of a squirrel. She carried it off to the side of the road where she was somewhat hidden in the tall grasses. This is when I caught my breath. She spent several minutes eating her find. She then descended from her hiding place and continued on her way, up the two lane road.  Her trajectory as I followed was in a single direction — far and away from where she began.  I wondered where she was ultimately headed. I would have needed night vision goggles to follow any further.

car headlights help me focus

car headlights help me focus

what you can see with night vision goggles

what you can see with night vision goggles

I actually tried on a pair of night vision goggles from my son’s lab. Wow! In a totally blackened room, you can SEE! What you see is a very clear and sharp black and green. I wondered how close these are to coyote night vision. Most of the daytime treks I’ve kept up with lasted anywhere from one to three hours. I’ve always assumed that nighttime trekking was a more substantial endeavor, maybe lasting all night. I wasn’t able to find out how long this one lasted because of my own inability to see. I turned around and went back.

Avoiding Danger: People and Cars

It was dusk when coyotes headed out on their evening trek. They followed the street line at first. Coyotes, like the rest of us, take the path of least resistance. Within minutes, the one in front stopped short, stood very still and listened. Yep, although you could not see them, there were people talking ahead. Better change to a less conspicuous route.

They took a path under a thicket, following the street line, but way in from the street, along the backside of houses and apartments — it was an overgrown green corridor never used by people. Soon they emerged from the overgrowth. The dim dusky light hid them well. Nonetheless, two cars stopped to observe, and commented to me excitedly. Everyone wanted them to be safe.

One of the coyotes headed to the sidewalk and street curb, with the obvious intention of crossing the street. Four years ago, this very coyote was hit by a car and remained lame for over a month: she healed on her own. She learned from her experience and now plans her crossings carefully.

She stood there, hidden on one side by trees and by a parked car. Cars, their headlights on, passed by pretty consistently. When there was no car in view, she used her ears to get a sense of how safe it was, and when a person walked by, she hid behind a tree and was not seen. She kept waiting as cars continued to come by. Obviously, in her experience, this would not be a good time to cross. She turned around and went up the hill and disappeared from my view instead of crossing the street.

The camera has compensated for the dim light in these photos: in fact, the coyotes blended into the background and were difficult to see in the dark.

Mapping Trekking Behavior #2: In An Urban Park & Woods

I’ve been mapping some trekking behavior lately. Here is a second trekking map. The mapping allows me to describe a larger, yet delimited chunk of time and space: where do coyotes go and what do they do? This trek was two hours long and covered an area of about 1/3 mile — as the crow flies — in an urban park with surrounding woods.  There were two coyotes involved.

During this two hour trek I took about 300 photos. I culled these down to 100 — but, I thought, who’s going to look at 100 photos? So I cut them down to 50 photos — but who’s going to look at 50?  Well, I needed 50 because I’m using the photos this time to tell the story — without any additional text except this introduction. Hope it works and is interesting! In summary: the coyotes explored, sniffed, marked, hunted, constantly communicated between themselves, waited for the other, avoided human and dog activity except to watch it at a great distance, played, looked around, hid, spooked at times, were wary of cars, were in the street, drank water, caught a gopher, did not catch a squirrel they went after, had a dog encounter, followed a dog. These coyotes saw 5 dogs with their owners during this trek — two of the dogs & owners did not see the coyotes. The trek included a couple of “dips” into “people” areas.

There are 50 slides, 12 of which are referenced to the 12 points on the map, so you’ll know how they fit into the trek: photos 1, 3, 15, 26, 27, 29, 32, 38, 39, 47 and 50. The lower map may be clicked to enlarge it.

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Trekking Map #2 [click to enlarge]

 

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