Blue tit nest part 3

In the header photograph, the blue tit’s eggs are lying in a cup shaped nest lined with soft feathers that are obviously intended to keep the eggs warm. But around the edge of the cup there are larger feathers; their purpose is not so clear.

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Blue tit nest part 2

After yesterday’s video post, a reader asked what triggered the blue tit female (it is always the female blue tit that builds the nest) to stop collecting moss and to begin collecting what he called fluffy stuff. While failing entirely to find an answer to his question, I found a treasure trove of research into blue tit nests and the materials they use to build them.

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Blue tit colours

The blue tit (Parus caeruleus) has been classified as sexually monochromatic, which means that male and female are the same colour. This classification is based, though, on human colour perception, not on blue tit colour perception.

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Chaffinch

According to the RSPB, trichomonosis, an avian disease caused by a parasite called Trichomonas gallinae, has reduced the UK’s chaffinch population by 34% in the last decade.

Audio: Common Chaffinch by Krzysztof Deoniziak (CC BY-NC-ND 4.0 DEED) xeno-canto.org XC884915

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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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