Rainbow Clouds and Birds at Our Feeders

Rainbow clouds have been visible for several evenings recently. They are known as “nacreous” (or polar stratospheric) clouds and are very unusual in Britain. Nacreous clouds typically form in the winter polar stratosphere, a layer of our atmosphere around 15,000 to 25,000m in altitude. The stratosphere is generally very dry and so cloud formation is rare, but it seems as though recent storms may have driven moisture high into the atmosphere and the very low temperature turns any moisture in the air into ice crystals. On the down side, these clouds enhance the breakdown of the Earth’s ozone layer, as the ice crystals in the clouds encourage a chemical reaction between the ozone layer and gases such as chlorine and bromine (giving the colours). 

Nearer home lovely to see a flock of 10 Long-tailed tits in the garden plus the usual feeder species squabbling for possession.

RSPB Otmoor (2) Small Birds

 For about 15 minutes I was entertained by a very large flock of mixed small birds - warblers, Chiffchaff and Black Cap, Blue Tits and Goldfinches feeding on the abundant midges (!) and seeds respectively. Such a pleasure to see large numbers of small birds after a difficult summer for them with the hot dry weather.

Stinking Hellebore and Garden Birds

I was really pleased to find a colony of Stinking Hellebore, Helleborus foetidus, on the old railway embankment in Toft. This is a short-lived perennial herb of shallow calcareous soils. It is a poor competitor, and intolerant of deep shade, so is usually found in small colonies in woodland glades or open scrub, on scree slopes, rock ledges, hedgebanks etc. There are other plants of the species around Toft but I have not found new colonies before. 

With the cold weather, our garden is hosting lots of Goldfinches, Greenfinches, Blue Tits feeding on the old seedheads and the provided sunflower seeds.

Stanwick Lakes - Where Were All the Birds?

 The very high water levels in the Lakes and the river Nene resulted in a lot fewer birds than previous visits. Coupled with overcast skies and strong winds meant we had a pretty sparse day as regards subjects to photograph though the feeders produced good opportunities including Muntjac deer.

. However, the group enjoyed a long walk round the reserve and a warming drink/lunch in the visitor centre

Lackford Lakes - Woodland Birds

Unfortunately cloud levels had increased by the time that we visited the woodland feeding station at Lackford but the birds were as obliging as ever. My favourites were the Coal Tits and Marsh Tits though the Nuthatches always steal the show!!