Road Closure. The road to our centre (from B725) will be closed today (18.08.22) for resurfacing (duration subject to change depending on weather conditions). Apologies for any inconvenience. Thank you for understanding.

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Spoonbills, Snipe & special Sparrows

We had a nice visit from three Spoonbills this Monday (19th July). They had a good feeding session on our Folly pond much to the enjoyment of our visitors, volunteers & staff.

Their bizarre spoon-shaped bill is used for feeding, swept back and forth while being held slightly open, it filters out small invertebrates disturbed from the sediment by the birds vigorously paddling their feet.

When they hunt they swing their beaks from side to side in shallow pools of water and are able to detect any small crustaceans, worms, beetles, and small fish. Their bills are packed full of sensors which can detect the smallest of vibrations in the water, so any tiny creature doesn’t stand a chance!

In addition, there are some Snipe passing through. So far they have been sighted on the Folly & Whooper ponds.

FotoJet (1).pngSnipe Photo by Lucy Mortlock

We have also spotted a leucistic juvenile House sparrow (pictured below to the top left beside the adult). Leucism is a variety of conditions resulting in the partial loss of pigment in an animal causing white, pale, or patchy colouration of skin, hair, feathers, scales, or cuticles, but not the eyes. In leucistic birds, affected plumage lacks melanin pigment due to the cells responsible for melanin production being absent. This results in a white feathers, unless the normal plumage colour also comprises carotenoids (e.g. yellows), which remain unaffected by the condition. Although leucism is inherited, the extent and positioning of the white colouration can vary between adults and their young, and can also skip generations if leucistic genes are recessive.

The reduction of pigment in leucistic birds causes feathers to weaken and be more prone to wear. In some situations, this can hinder flight, which, in addition to leucistic birds usually being more conspicuous, can heighten risk of predation. There is also evidence that leucistic birds might, on occasion, not be recognised or accepted by a potential mate.

‘leucism’ is being used as an umbrella term to encompass a number of plumage irregularities that can be difficult to distinguish from each other. One of these is called ‘progressive greying’, which also results in white feathers. While leucism is heritable, progressive greying is not – but without knowing the history of a bird, these two conditions are difficult to tell apart.

‘Dilution’ is another condition that is grouped under the category ‘leucism’. Here, plumage colour often appears ‘washed out’ (i.e. ‘diluted’). In dilution, melanin cells are present (unlike in leucistic birds) but produce less pigment than normal. White feathers can also be caused by chromatophore (pigment cell) defects, rather than an absence of melanin-producing cells.


lucy mortlock leucistic house sparrow.jpgLeucistic juvenile House sparrow photo by Lucy Mortlock



BirdsMammalsInsects
SpoonbillRoe deer
Large red damselfly
Snipe
HareAzure damselfly
Osprey
Weasel
Four spotted chaser
Red KiteBadgerBanded demoiselle
Great White EgretFox
Common darter
Kingfisher
Bank vole
Common blue butterfly
Redshank

Large skipper butterfly
Lapwing
Speckled wood butterfly
Grey Wagtail
Orange-tip butterfly
Reed Warbler
Small white butterfly
Willow Warbler
Green-veined White butterfly
Sedge Warbler
Peacock butterfly
Grasshopper Warbler
Red admiral butterfly
Garden Warbler
Large white butterfly
Swift
Small tortoiseshell butterfly
Swallow
Wall butterfly
House martin

Meadow brown butterfly
Wheatear
Latticed heath moth
Linnet
Painted lady butterfly
Skylark
Ringlet butterfly
Treecreeper
Nuthatch
Chiffchaff
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