Species 103

We have had some really fine weather here recently and John the bird-ringer has been catching newly-arrived summer visitors in the meadows.

A common whitethroat just back from its wintering grounds in the Sahel region of Africa, on the southern borders of the Sahara Desert. I love that chestnut eye. John could hear him singing as soon as he arrived in the meadows not long after dawn, and was very pleased when he flew into the net

There is also loud chiffchaffing emanating from the hedgerows these days and here is the unassuming bird that is responsible for that:

Most UK chiffchaffs are summer visitors, spending their winters in the Mediterranean and North Africa. An increasing number do overwinter here now though

The blackcap’s song is beautifully melodious. It’s the males that are singing, but here is one of the females that they are trying to impress:

The blackcaps that breed in the UK migrate down to the Mediterranean and North Africa in the autumn. There are blackcaps in Britain over the winter but it has been discovered that this is a different set of birds – they are winter visitors that come across from the colder parts of Central Europe

Linnets are partial migrants. Many remain in this country over the winter, forming large flocks on farmland that has some winter food, but a significant number migrate instead to southern France, Spain and Morocco. Either way, lovely linnets have recently arrived back here in the meadows to breed this summer:

A male linnet caught in the nets this week
Displaying his black-and-white tail feathers

John also caught a pair of robins. The first one he ringed was a male but the second, when gently blown upon through a tube, could be seen to have a nearly fully developed brood patch. This indicates that she’s a female and should soon be sitting on eggs. This brood patch has a really good blood supply to keep the eggs warm:

As John was at work with his nets, Dave and I took the dog around the meadows with her ball. We were walking along the northern boundary when I heard a small commotion going on in the hedgerow. I peered in and was flabbergasted to see that it was a water rail, struggling to get itself deeper into the bushes as we passed by.

I did get a good look at it but unfortunately was too stunned to act quickly. I failed to get a photo before the bird worked its way to the bottom of the hedge and out of sight.

Here is a photo of a water rail from Wiki Commons though:

Photo by Alexis Lours CCA 4.0 International

It is thought that around 3,900 pairs of water rails breed in the UK with the numbers boosted in the winter by birds coming from colder parts of Europe. But they are very secretive wetland birds, usually hiding themselves amongst reeds and are difficult to properly count.

I presume that the water rail in our hedgerow this week must be en route back to its breeding grounds in Continental Europe. They are strongly nocturnal when they migrate, so would probably have stayed in the hedge all day and emerged when it got dark to fly across The Channel. I positioned a couple of trial cameras in case it came out onto the grass in front of the hedge before it flew off.

Two trail cameras primed and ready for the water rail

Unfortunately the bird left the hedge that evening without emerging in front of my cameras. I had never in a million years thought that we would have a water rail on the meadows bird list, but there it now is, nestling in at number 103.

An alexander is a tall, thuggish plant, forming dense stands that outcompete native flora and is a real problem here on the East Kent coast.

For the first few years after taking on the meadows, we were naive and insufficiently vigilant, letting alexanders grow and set seed in the meadows in a most foolhardy manner. This photo taken out the front of Walmer Castle this week demonstrates what can happen when you let down your guard in this way:

An alexander monoculture in front of Walmer Castle

A thick hedge of the hated plant lines much of the coastal footpath between Walmer and Kingsdown at this time of year:

By the time we woke up to the threat and took it seriously, we already had thousands of alexander plants growing in the meadows. So many, in fact, that it is impossible to dig them all up in one go.

This is our area of densest alexander growth. But, although there are loads of young plants here, it is a piece of cake to spot and dig out any that decide to flower

The same cannot be said for the ones that flower deep within the spiky hedgerows though:

Dave going in for the kill with his hood up and gloves on

The unwanted alexander successfully extricated from the back of the hedgerow:

Our approach for several years now has been to dig up any alexander that starts to flower and, since January, I have been regularly patrolling with my spade. I have removed hundreds of them and, now in mid April, the plants that remain will not be flowering this year. I will continue to be vigilant for a few weeks more, but can tell you now that no alexander will set seed in the meadows for another year. The war is far from over, however, and battle will recommence next January.

It’s wonderful to have the invertebrates out and about again and how I have missed them. This week I have been trying to photograph some flying insects as they feed from flowers.

A bee-fly is a sweet little thing so long as you don’t look too closely into its parasitic lifestyle. It has a rigid proboscis which cannot be retracted:

A dark-edged bee-fly enjoying some green alkanet. It is after the nectar which is stored at the bottom of the flowers

Green alkanet has flower tubes and that are shorter than the length of a bee-fly’s rigid proboscis, so the fly has to hover away from the flower as it drinks the nectar:

A primrose, however, has a flower tube that is longer than the bee-fly proboscis:

April 2025. Once more, the nectar is right at the bottom of the the flower and the bee-fly has to land to access it this time. It sticks its proboscis in and then a tongue comes out of the proboscis like a trombone to reach down to the depths

Although this photo below from 2023 is unfortunately not in focus, it shows a bee-fly that has just fed on a primrose and its pale trombone tongue is still extended from the proboscis:

April 2023

There are lots of cowslips in the meadows at the moment and this is another example of a very long flower tube needing specialised mouthparts to access the nectar. I have only ever seen bumble bees feeding from these, although I suspect that moths also do under the cover of darkness.

I think this is a garden bumble bee (Bombus hortorum) which has the longest tongue of all the UK bumble bees. It can stretch to magnificent 20mm, which is as long as its body

Unlike the bee-flies, a bumblebee can curl its proboscis away when not in use but in the photo below the bee is approaching a cowslip with it unfurled and ready for action:

The red-tailed bumblebee (Bombus lapidarius), however, has a tongue that is less than a third of the length of the garden bumblebee, at about 6mm. This shorter length means they prefer shallower flowers and I have been seeing them a lot on dandelions this week. They can also bite holes into the sides of the deeper flowers to reach the nectar though.

I wish I’d watched this red-tailed bumble bee a bit more closely now to see what she was up to at the cowslips, because I don’t think she can access the nectar in the conventional way

I am a great hairy-footed flower bee enthusiast and now have six pots of Pulmonaria by the front door in the hope of luring these lovely bees into the garden so that I can admire them.

These bees are ridiculously adorable. A ginger male here
The podgy female is all black other than her orange thighs. Her back legs are yellow here because of the pollen that she has packed onto them, but the hairs on her legs underneath the pollen are actually orangey
Again the Pulmonaria flower tubes are quite long and she sticks out her mouthparts out as she approaches

It is wonderful to have bees flying all around once more, but it can be so very frustrating trying to photograph them in action.

The reptiles are also up and out now:

Three young slow worms warming up under a sampling square

Unfortunately its not just us that has spotted them and here is a slow worm in a magpie’s beak:

As we have been looking under the reptile sampling squares we’ve found a variety of small mammals, although they are fast and photography is again difficult. A nice bank vole here though:

I have run the moth trap several times both in the meadows and in the wood and have been getting some interesting moths, many of which I have never seen before. So far this year I have already added a pleasing nineteen new species to the meadows moth list and nine for the wood.

For their safety, I release the caught moths from the trap the next evening after the birds have roosted. When I went to let them fly one evening, I found that love had blossomed in the trap:

A pair of common quakers in the moth trap. We don’t think that we have seen night-flying moths mating before

My rough calculation suggested that the tawny owl eggs in a box in the wood might be hatching over the Easter weekend, but so far I have not noticed a change in behaviour that suggests that this has happened. Several small mammals are being delivered to the box overnight but perhaps still only by the one bird:

These two photos below were taken on the same night, one at 10.30pm in the evening and the other at 5am the next morning. I would think that an owl wouldn’t need to take two baths a night at this time of year, and that this must be two different birds, one of which will be the female away from her eggs or young:

I have been seeing a nice variety of small birds visiting this pond recently including bullfinch, siskin and redpoll. Obviously not while this bird was there though:

Sparrowhawk at the pond in the marjoram glade

A different pond has been visited by a buzzard this week:

There is a lot going on at this time of year and I have had to leave out many interesting photos to avoid this post becoming far too long and unwieldy. I do want to include these last two photos, though, where the good old trail cameras have managed to capture animals flying through the air:

A rat in the meadows. After seeing on the camera how many rodents pass to and fro across this gate on a daily basis, I try not to put my hand on the top of the gate when I’m opening and closing it
A squirrel in the wood. It did successfully land on the box and had a peer in at the owl

I find myself more than usually busy with nature at this lovely time of year. I hope that you too have been able to get out and about to experience and enjoy the wonderful spring as she is gradually arriving.,

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