An injured cub on OtterCam

I feared the worst at one stage but this may not turn out as badly as I thought.  The smallest cub, presumably female, was limping badly two weeks ago with an injury to its right back leg or foot. In the first video you can see it lagging behind the others, wanting to join in the play fight and then getting upset when it all got a bit boisterous and one of them presumably trod on its poorly foot.

Two days later the cub appeared on the cameras on its own and could barely drag itself up the bank - a video distressing to watch that I won't post here.  I thought if it didn't manage to rejoin the mother and the others and couldn't catch its own food it probably wouldn't survive.  Later that night there was a video of mother with the two fit cubs and no sign of the third.

Since then, however, it has rejoined mother and at least one of the others on the videos and seems to be managing, although it is still limping badly.  Here is the cub with mother and one of the others.  The first camera was very fogged up.

And then something I have never seen before.  Otter cubs are weaned by 14 weeks of age and these three are now seven months old and yet mother was letting the injured cub suckle. Perhaps she senses the cub's distress and this was for comfort rather than sustenance.

Some good news is that the dog otter has made a fairly good recovery from his leg injury although it has taken two months.  Let's hope the cub does the same.

Stoats and weasels

I rarely see a stoat or a weasel in the garden but I now have three trail cameras set up to look out for them, one on my "weasel wall", one in a camera box and a third watching the base of a dead sycamore and adjacent low wall.  Since the start of the year stoat visits have been regular but fleeting, enough to show there is one around but not enough to suggest it lives here.  It doesn't go into the camera box but appears on the other two cameras.  Last week it briefly checked the base of the dead sycamore and then ran up the tree, disappearing from view - something I have seen several times before.  This time, however, it came back down after only 15 seconds carrying prey, identifiable as a vole in slow motion.  There is an old starling nest hole about 3m up the tree which is probably where the vole was, but why and how it got there, and how the stoat knew, is mystery to me.

Not to be outdone a weasel appeared on the same camera, checking on a delivery van before running towards the camera.

Most of the stoat recordings are on the wall.  Here is one doing what stoats do, although quite why is another mystery.

Although weasel visits are less common, one also showed up on the wall last week, not quite as frantic as the stoat.

My hope is that one of these will decide that the wall is a good place to make a nest and raise young.

Puzzles on OtterCam

I watch a lot of otter videos and most times I can understand the behaviour but this episode has me puzzled.  The cub is obviously in mother's bad books, perhaps because of something it said or did, and it seems to be being disciplined in some way.  Perhaps the mother didn't want to be followed but, if so, she gave in in the end.  I don't think I have heard this chittering sound from a cub before, only from an adult female when courting.

The dog otter has been carrying an injury for the last few weeks.  I first noticed it seven weeks ago, having not seen him on camera for a couple of weeks before that.  He was unable to put his left hind foot to the ground and was hobbling about on three legs.  There were no signs of wounds apart from a new scratch on his nose - so a fight injury is a possibility but this would be an odd one.  It is intriguing that there were what looked like wounds on a dog otter in early December.

From the look of it I first wondered if his leg was broken or dislocated but when he rolled around he didn't seem to be in any discomfort, although his leg was flopping in a very unnatural position. Over the weeks it has gradually improved as you'll see from the video but he is still limping.  I guess we'll never know the cause and I can't even be sure it is the same dog otter as before. There may have been a coup.

I only just missed a very close encounter last week.  Only three minutes after I left this character turned up to sniff the cameras, perhaps to check it had been me.  Maybe next time I'll wait a few minutes in case it happens again.

TrailCam Trailer

I notice that all four blog posts in January were on mustelids - polecat, weasel, stoat and otter, so it's time for something different.

I have a lot of trail camera wildlife videos.  They get seen transiently by people on this blog, or the NHSN blog, or on Winterwatch etc, or in Facebook groups but then don't get seen again so I have been wondering if there is anything else to be done with them.  I have easily enough to make a film on otters, or just on wildlife generally, but I lack the script-writing and video editing skills.  As an exercise I made a short trailer to showcase some of the things trail cameras can do - the photo above shows the production process.  When I show videos to people (which is often!) they seem surprised by the quality and the colours, perhaps expecting blurry black and white images, like mine were 10 years ago.  So here is a taste of what trail cameras can do.  I hope you enjoy it.  If you have ideas about what else to do please leave a comment.

The otters have a takeaway

The cubs are over six months old now and are growing fast but they still rely on their mother to catch their food.  As they become more independent they are less often all three close by their mother's side so when she catches a fish there is often no competition for it.  Here one of the cubs shows how to eat a raw fish in 40 seconds, mostly without using its paws.

Otters mainly eat fish of course, but being carnivores they also will be happy with amphibians, crustaceans, small mammals and birds.  Ducklings and other young birds are a delicacy in springtime but occasionally there is the opportunity of something bigger.  One night last week the mother went quickly past one of the cameras with two cubs in very close attendance and something in her mouth.  The view is brief and the other cameras missed it but I worked out she had caught a drake mallard.

By the time they reached the next camera she still had the duck and wasn't letting go. Unfortunately she then took it away as I would have loved to see how she dealt with it.  All three cubs followed, hoping for a share of the spoils.  (The moaning sound is from the mother otter, not the duck!)

The cubs will have to work on their fishing skills before they become independent in a few months’ time but I expect it will be some time before they can catch a duck.

News from StoatCam

Mustelids seem to be taking over the blog and this week there is more news of stoats in the garden.  After all the excitement in October and November it went a bit quiet and almost all my cameras were watching otters, polecats and weasels elsewhere.  The Camtraptions camera wasn't contributing much so I brought it home and set it to watch the weasel wall.  And straightaway there were stoats.  The videos from this camera aren't great and this is cropped as well so it's rather grainy but you can see what is going on.  The two clips in this video were only a minute apart but I am pretty sure there were two stoats - larger and smaller so male and female.  The second one is a bit farther away from the camera so it is difficult to be sure but see what you think.

Then the female went through the camera box a few metres away.  I have edited it at half speed to give a better look as she rushed through.

A few days later a stoat went through so fast that there was only a glimpse of its tail on the first frame.  However the tail is longer than the female's tail (she's on the left here) so again I think there is also a male around although I don't yet have a video of two together.

I brought a Browning camera back here to get better pictures and over the past week there have been stoat videos every day, up to 10 in a day.  Most of the activity is on the wall but also under the dead sycamore where I first saw a stoat last October.  I think there has occasionally been a larger (∴ male) stoat but it is mostly a female.  It is also encouraging that the female is defending the wall against squirrels, as in this video.  She must like it here.

Then I moved the camera a bit closer and you'll see that the stoat knows it is being watched. Notice also that it looks rather pale so although we aren't far enough north to expect a full ermine I wonder if this is a partial winter coat.  

Two years ago I did get video of male and female stoats only 10 minutes apart and that female had white legs and a white tail.  I'll see if I can spare another one or two otter cameras to keep an eye on the stoats.  I'll post more news when I have it.

Breakdancing on WeaselCam

WeaselCam has been away on tour again, back to Elemore Park in County Durham.  This was where we saw the Greater White-toothed Shrew but because it is a nature reserve evolved from a municipal golf course it has a lot of grass, therefore a lot of field voles, and therefore a lot of weasels.  The camera was there throughout December and recorded four weasel visits.  The box probably smells of mice and voles (which also visit) so the weasel is searching out of curiosity in case there might be something to eat.  As far as I can tell from the gular (under chin) spots it was always the same one and it may even be the same one as last time.  Here is what it got up to. On the first video there was background noise from earthmoving machinery and traffic.

The second time the weasel was bouncing around even more, a bit like the "death dance" of a stoat, which is said to be a way of hypnotising its prey.

Here is an excerpt from the same video, at half speed to show more clearly some of its breakdancing moves.

Each time the weasel visited it was around for two or three minutes.  You can see the advantage of my design of camera box, with a view down one of the entrance pipes, as we can see the weasel coming in and out and going back to check the entrance.

On the last visit the weasel was banging around behind the camera.  I think it must have been practising its dance moves as there is nothing round the back, just an empty space.  Perhaps I need another camera pointing backwards to see what is going on.

The camera is still in place, hoping to record more shrew activity, but I expect we'll also see more of the weasel.