Kites, Herons and Frogs

This week we spent a couple of nights in Maidenhead, Berkshire, where we used to live. It’s always so nice to rediscover our favourite dog walks there – especially Ashley Hill, a nearby Forestry Commission wood. I first visited Ashley Hill on an infant school trip nearly sixty years ago, soon after it had been completely cleared-felled and replanted with saplings. Amazing to see it now:

Ashley Hill hasn’t been clear-felled since that time. These days the Forestry Commission arrives about once every ten years to cherry-pick the trees to take away for timber

We have been watching this red kite nest on Ashley Hill for a few years now:

On the Forestry Commission’s last visit, the skinny tree that is supporting this large nest had had warning tape tied around it so that it wasn’t cut down by mistake

While we were standing in the rain looking at the nest this week, there were two attentive red kites perched up very close and we presume that they will be nesting there this spring:

I didn’t manage to get a photo of the red kites this week but Dave took this amazing photo of a red kite on Ashley Hill a few years ago:

My sister had red kites nesting in her Berkshire garden last summer and I digiscoped the young bird that was soon to fledge:

Red kites are famous for incorporating plastic into their nests and this nest certainly had a lot of that, probably because the fields around the house are covered in plastic polytunnels growing soft fruit. This youngster is yet to get its grey head
One of the parent birds in my sister’s garden

The Berkshire College of Agriculture is next to Ashley Hill and they have planted eighteen hectares of dense swards of willow, which they burn in their biomass boilers as an eco way to provide 80% of their fuel needs.

The land planted with the willow does look like an unattractive and impenetrable monoculture, although we saw that the more mature sections were currently in flower and being visited by lots of bees. Being a good source of pollen and nectar in February is a great thing:

I always hope to get to Spade Oak Nature Reserve for a spot of birding with a friend when I am in the area. The weather was pretty miserable for our visit this time and the heronry there wasn’t as advanced as it had been at the same time last year. There were still a few birds flying about…

..but nothing like the wonderful sights we had seen last year:

Photos from February 2023

Back in the meadows again, we have been wonderfully heron-free so far this year, as the annual frog-spawning jamboree gets underway. Frogs gathering in such concentrations is a big temptation for herons but thankfully the party has remained under their radar so far:

Male frogs are patiently waiting in the pond for arriving females, who will be already packed full of spawn. The males have bright white throats and also purple stumpy thumbs to cling tightly onto a female should they get the chance
That froggy smile is very appealing

There always seen to be so many more males than females, but the females have been turning up:

A female with her swollen belly has been claimed by a suitor

Once it was obvious where the spawn was going to be laid this year, I put two cameras onto time lapse, both taking a photo every five minutes throughout the night:

The cameras set up and ready to go
The big group of males awaiting females
When a poor female does arrive, there is a mass bundle as the males compete to be the one that gets to fertilise her spawn
So far this much spawn has been laid. Recent summer droughts, when this pond nearly dried out completely, have knocked back frog numbers and the amount of spawn being laid is much less than in previous years

We have been venturing out in the dark to photograph the frogs, and have also seen these mating backswimmers:

Backswimmers always swim upside down and I have never seen what they look like the other side up:

By Bj.schoenmakers on Wiki Commons. There are four UK species of backswimmer, all quite similar. I might do some pond dipping to see if I can catch one and identify it properly

The ponds are really coming alive now with the marsh marigolds starting to flower:

There have been several dunnock singing from prominent positions along the hedgerows this week. I often overlook these birds but they have such a lovely song:

With that very pointy beak, dunnnocks mostly eat insects but do also eat seeds and worms, particularly in the winter. This bird has fallen foul of the ringers’ net at some point and is now sporting a silver ring

The UK Birds Of Conservation Concern List 5, issued in 2021, assigns each species a green, amber or red rating depending on how badly they are doing and dunnocks are unfortunately amber-listed. In the photo below there are four species of bird – two of them (stock dove and wood pigeon) are on the amber list along with the dunnock, whilst the other two species (yellowhammer and house sparrow) are actually red-listed for being of the utmost conservation concern.

Not a single green-listed bird to be seen. How depressing
The kestrel is another amber-listed bird. Their population dropped 40% between 1995 and 2020 and there are now only about thirty-one thousand pairs in the UK
House sparrows have been on the red list since 2002 but the good news is that the rate of decline in their numbers has slowed recently. A flock of about a hundred of them base themselves in the meadows throughout the winter

It is now eight years since we planted two hundred bare-rooted, native trees in the meadows which have been steadily growing into a linear wood. Around fifteen of these trees are yews and they have not been doing anything spectacular in the years since planting but they have been slowly increasing in size. This week I noticed that one of the trees looks like it has been strung with lights like an out-of-season Christmas tree:

Hidden away at the back of other trees, a yew tree is now festooned with lights
Yews are dioecious meaning that there are separate male and female trees. This is a male and its flowers will open out a bit more before releasing pollen into the wind, in the hope that some will come to rest on a female flower nearby. As with other catkin-bearing trees like hazel, this is timed for before the deciduous trees get their leaves which would impede the free wafting of the pollen
A few days later and the male flowers had opened out more
We then went looking for a female tree and her flowers, which look like a scaly buds. Several were found nearby

So, for the first time, we have been able to sex our yew trees and we were pleased to see that we have a nice mixture. There will hopefully be berries on the female trees this autumn which will all be additional food for hungry blackbirds.

Now that I’d got my eye in for the flowers of yew, I went to look at a large yew cultivar that we have in the garden. It has never had any berries on it and we presumed it must therefore be a male:

And, yes, it was absolutely heaving in male flowers. In all of the ten years we have been here, we’ve never noticed that before:

Another yew cultivar stands next to this male yew and she is covered in berries every autumn. How lucky for her that a male is so close by:

Photo from October 2022

Charles Darwin was very interested in earthworms and he carried out a lot of experiments on them including how and why they always drag pine needles down into their burrows by the joined-up end. As well as the two yews cultivars, we also have two large Scots pine trees in the garden and Darwin would have had an absolute field day under them. Worms have created lots of spiky ‘hedgehog’ mounds on the ground, bristling with pine needles, that have all been dragged into their burrows by the joined-up end leaving the two points sticking up into the air:

I can’t help wondering if there are pine-needle-loving specialised populations of earthworms that live in the ground under these trees. I suspect that there are and will try to find out.

I am still working my way through the manual for my new bridge camera. One of the settings allows me to take a photo mainly in black and white, other than selecting just one colour to be shown – either red, yellow, green or blue. Here I have chosen red and I love this striking image of stinking iris berries:

I have lots of ideas for how this camera setting could be used – selecting yellow and taking a photo of the primroses in the wood for instance. But there is not much colour out there at all this morning as heavy rain has fallen through the night and continues to come down now. Once the sun returns, and the onset of spring can restart, I am looking forward to emerging and putting the new camera through its paces.

Galanthomania

There is something about a snowdrop valiantly pushing its way up through the frozen winter ground as a herald of spring that has earned it a lot of ardent admirers. Snowdrops (from the genus Galanthus) are not native to the British Isles but there are now many hundreds of different varieties grown here. There are often only very subtle differences between them, and it may be difficult for many to understand why galanthomania and snowdrop collecting has become such a big thing. Bidding wars have led to rare varieties selling for eye watering amounts of money – in 2022 a single bulb of ‘Golden Tears’ sold on Ebay for nearly £2,000, reminiscent of the tulip mania that so enthralled 17th century Europe.

In a small way, snowdrops do set my own pulse racing and last weekend we visited a garden in the North Downs that was bravely opening during the first weekend in February for the National Garden Scheme Snowdrop Festival.

Knowle Hill Farm with wonderful long-reaching views over the Kentish Weald

Around 3,500 privately-owned gardens across England, Wales and Northern Ireland open under the National Garden Scheme every year. A small charge is made to enter and there are often also light refreshments and plant sales, with all proceeds going to charity. So, as well as the public getting the opportunity to be inspired by a beautiful private garden, £67 million has been raised for charity since the scheme began in 1927

We had the dog with us at the garden because we also threw in a walk for her at Kent Wildlife Trust’s Hothfield Heath reserve as part of the same trip
Although the dog generally loves humans, she gets anxious around the unpredictability of children. She wears her Nervous harness when she is out in company as a warning to parents

The garden has around one hundred and forty different varieties of snowdrop, many of which were labelled up. Fieldgate Prelude and Don Armstrong seemed like very vigorous varieties:

The snowdrop flower has three long and three shorter tepals hanging below a cone-like ovary:

The word tepal is used when a flower’s petals and sepals are indistinguishable

I was very taken with the varieties that had yellow rather than green ovaries and I think that Spindlestone Surprise was my favourite one in the garden:

Unfortunately there were no pots of Spindlestone Surprise on offer at the plant sales table, but I did buy two pots of Madeleine which is still a very beautiful snowdrop, although her ovaries are not quite as yellow:

I was surprised to see honey bees visiting the snowdrops although I’m afraid that I didn’t feel comfortable getting myself down onto the ground to try to photograph them – other visitors would have had to step over me. Since honey bees attempt to survive the winter, they are one of the few flying insects that are able to emerge on mild days to take advantage of what pollen is on offer.

But since pollinators are scarce in February, snowdrops do not rely on them and mainly reproduce by bulb division. However, should they get pollinated, seeds will then form in the ovary. Once flowering is over, the stems collapse and the seeds come to rest on the ground. The seeds have a protein and oil-rich protuberance on them called an elastiome which attracts ants to them. These ants carry the seeds underground in order to feed the elastiome to their larvae, but the seeds remain untouched and have now effectively been planted by the ants. I love to learn things like this.

There was also topiary to admire in the garden:

One of the joys of visiting a garden is coming away with ideas for your own garden back home. We loved this small kingfisher sculpture..

…and this swift weathervane:

I always find the taps on waterbutts frustratingly inadequate and slow-running and would love to just be able to plunge a watering can into tanks like these:

The lids would mean that there is no worry that birds would fall in and drown

Back in the meadows, I’m always pleased to find and be able to identify new invertebrate species and this week a two-toothed door snail, Clausilia bidentata, was attached to the bottom of a trail camera sitting on a rotting log:

Door snails are unusual amongst other snails because they have a left-handed spiral, but also because they have a door (a clausilium) that can slide across the shell opening in grooves and which protects the soft parts of the snail against predators
I may have never seen a land snail this shape before, but the two-toothed door snail is common and lives in woods and hedges, coming out at night to graze on lichens

Yellowhammer numbers are going up. There are five here waiting for the magpies to finish, but I have seen a maximum of eight in one photo this week:

The crows here have started nest building:

I have also seen magpies flying around with sticks but haven’t yet worked out where this year’s nest is.

Over in the wood, I notice that this female sparrowhawk is ringed:

I remembered a sparrowhawk being ringed in the wood back in 2019 and looked out the photo:

But this was a male and so is not the bird seen this week.

Nine blue tits and a great tit here at this pond:

Unfortunately squirrels have now started carrying sticks and leaves into the owl box

They are definitely setting up home in there, but the tawny owls have not completely given up:

My final photo for today is the contents of a very exciting package that arrived this morning:

I might not have been able to purchase this snowdrop variety last weekend, but I did manage to buy a single, underwhelming little bulb on the internet when I got home. Admittedly it has a long way to go before it looks like the charming group of Spindlestone Surprises we saw last weekend, nodding their yellow-ovaried heads in the February sunshine, but I will put it into the ground now and see what next February brings.