British Animal Challenge: bottlenose dolphins

It’s been a while since I last wrote about my British Animal Challenge, but I haven’t forgotten it. I managed to tick another species on my list this Easter: the bottlenose dolphin.

Easter day was glorious down in Cornwall. Beautiful weather, and ideal for a walk. So that’s what we did. We followed the coast path from Godrevy Beach, up round Dean Quarry (more on that later).

Of course, whenever I’m by the sea I keep my eyes peeled for exciting marine wildlife. A reasonably choppy day means I can spot vast numbers of imaginary basking sharks. But that day wasn’t so good for spotting imaginary wildlife; too flat. Which meant, when I did spot a fin breaking through the surface of the water, I knew it was something real.

Distant dolphins (the tiny black specks) by the Manacle rocks
Distant dolphins (the tiny black specks) by the Manacle rocks. (Sorry for the dodgy picture – I only had my phone with me).

The binoculars came out, and I was able to tell it was some kind of dolphin. Or rather, dolphins. There was a group of five. They travelled parallel to the cliffs, not far out, for quite a while, giving us an excellent, prolonged view.

I couldn’t identify which species of dolphin they were there and then. I could tell they weren’t common dolphins or porpoises, both of which I’ve seen quite a few times before. But I didn’t know what they were.

As soon as we got back to an internet connection, I looked up an ID guide, and concluded that they were bottlenose dolphins. This was confirmed a week later when we went out on a wildlife cruise, and, chatting to Captain Keith found that they’d seen the same group of dolphins in the same place on Easter Sunday afternoon, and they were, indeed, bottlenoses. I also learnt that one of the 5 was a youngster, which I hadn’t realised.

Bottlenose dolphins are between 2-4m long, and impressively intelligent. They use sound for communication as well as hunting, and some have been trained by the military to locate sea mines. They can live for more than 40 years, and jump 6m in the air. They’re pretty impressive animals.

The area we saw them in is the Manacles Marine Conservation Zone, off the east coast of the Lizard peninsula. This is a very special area for marine wildlife, but is under threat from plans to open a superquarry. Aside from the noise of the blasting and loading, pollution risk, increased traffic through the site of special scientific interest and area of outstanding natural beauty, and light pollution, plans involve building a new breakwater out into the Marine Conservation Zone. It was lovely seeing the dolphins there (we often spot cetaceans in that area), but there’s a real question over the future of wildlife in that area. If you want to find out more, visit the Community Against Dean Superquarry website.

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Dormouse box check, July 2017

We had a fantastic dormouse box check at my site this month, finding six sleepy juveniles and an active adult.

Juveniles are this year’s young, aged at least 28 days and weighing more than 10g. Their fur isn’t as golden as an adult, but they are still super cute.

Sleepy dormouse
Sleepy dormouse

It’s really encouraging finding them this month, having not found any pregnant females or mothers with young last month – it shows they are breeding already, but using natural nest sites rather than dormice boxes. These youngsters have plenty of time to fatten up prior to hibernation.

I particularly enjoyed this box check as Dan, who’s a Surrey Dormouse Group trainee, working towards his licence, was in charge of the clipboard, directing the volunteers and recording data. This freed me up to actually check boxes for a change. There’s a delightful moment of suspense when you slide the lid of a dormouse box across and peak in; what will be in the box?

The dormice at my site continue to build rubbish nests. We never find textbook examples, with woven honeysuckle cores surrounded by green leaves. It’d be easy to dismiss many of the nests we find dormice in as apodemus nests or bird nests. This site has taught me to investigate any possible nest carefully.

Two sleepy juvenile dormice
Two sleepy juvenile dormice

We found two juveniles in what was little more than a pile of leaves. And there was a shallow, mossy nest, which didn’t look very dormousy, but I checked it anyway. On first exploration of the cavity and down the sides I could feel nothing. I was almost ready to conclude it was empty, but I went back to double check the cavity and ended up finding three dormice.

The check ended up taking quite a while, partly because we found quite a few dormice, and partly because those we did find weren’t in any hurry to get back into their nests. Several of the juveniles we found were awake but sleepy. One decided that halfway through climbing back into its nest was a good time to fall asleep. Another decided to leave its tail dangling out of the box for ages.

Dormouse refusing to put its tail back in the nest box
Dormouse refusing to put its tail back in the nest box

I’ve been checking dormouse boxes for seven years, but they can still surprise, entertain and delight me.