Winter terminology

We use the words overwinter, hibernation, and diapause when we are writing about the reserve’s inhabitants’ preparations for the cold weather. It’s easy to assume that they are interchangeable terms but that is not so: let’s take a closer look.

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Muntjac

A message from an early-bird dog walker:

I spotted a Muntjac deer this morning, about 5 o’clock whilst walking my dog, who luckily is always kept on his lead. It was In the hedgerow that runs along the path from the carpark towards Studley, just one by itself only. Is this a species you are aware of?
I was very surprised to see it so close to a built up area which has quite considerable footfall. But for well over a year I haven’t haven’t seen the larger deer which frequented the park.

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Field vole

Our field voles (Microtus agrestis) are having a winter break from their long breeding season. They don’t hibernate; instead they grow a thick, very dense coat to shield them against the cold, and their metabolic rate almost doubles in order to maintain their body temperature.

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Winter badgers

Badgers don’t hibernate, even in January, but they sleep a lot. The dominant female is pregnant, awaiting the birth of two or three cubs in February, and the rest of the clan are living off their fat reserves. They will leave the sett to visit the latrines but in particularly bad weather will dig latrines in distant and otherwise unused tunnels inside the sett.

Like the rest of us, they are waiting for the spring.

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