Monday, 19 March 2012

A few more spiders




The fearsome, large jawed, Pachygnatha clercki. This is a male because it has the large swollen palps. It's about 8mm long in reality.


If the chap below is looking a bit nervous, it's because the fearsome, muscley creature with the big jaws is his date! Erigone longipalpis.


This is the palp of a male Centromerita bicolor. It's about 0.5mm long.

Sunday, 18 March 2012

Clwydian range

We had a nice walk in the Clwydians today, generally in the Moel Arthur area. Plenty of Ravens and Buzzards, some of which were displaying, plus a few Stonechats.


Coltsfoot, one of my favourite spring flowers.


Looking towards Penycloddiau from Moel Plas-yw.

Friday, 16 March 2012

Holcroft Moss

Plenty of Hare's-tail Cotton Grass in flower on Holcroft Moss at Culcheth today. Earlier, I heard my first Chiffchaff of the spring at Risley Moss.


Wednesday, 14 March 2012

A few money spiders

Who could not love the Linyphiidae family of spiders? Otherwise known as "money spiders", there are about 300 species in the UK, varying in size from about 1.5mm to 4mm. They are identified by a number of features including the shape of the carapace (head) in the males, the number of dorsal spines on the tibia, the presence or otherwise of trichobothria (long hair like setae) and the position of the trichobothria on the metatarsus. However, the clinching id features of mature animals are the genitalia. The male genetalia are the swollen boxing glove like palps, and these are unique to each species, particularly the shape of the palpal tibia. The female genetalia is the epigyne which is again unique to each species. The photos below are amongst my first efforts to photograph spiders. The largest spider here is about 3mm long in real life





The above two photos are both male Silometopus ambiguus which has particularly impressive palps.


This is underside of a female Oedothorax fuscus.


The epigyne of Oedothorax fuscus. Compare it to the quite diffferent epigyne of Erigone longipalpis (below).

Monday, 12 March 2012

Rainford Mosslands

Raven 1 flew east over Green Lane, Catchdale Moss
Yellowhamer 20 Old Coach Road
Corn Bunting 1 singing Clare's Moss, Old Coach Road
Buzzard 2

Sunday, 11 March 2012

High Street, Golden Eagle and Common Frogs

It's very difficult to put into words what a gloriously beautiful day it was on Riggindale Crag and High Street in the Lake District today. Absolutely ideal for walking, there wasn't a breath of wind until we reached the very summit of High Street, it was cloudless and warm enough to walk in a T-shirt. I don't think I've ever experienced a more perfect day in the Lake District.
According to the Met Office, the weather on the peaks was the result of a "significant temperature inversion", which basically means that it got warmer the higher you climbed rather than colder which is the norm.
We were lucky enough to see the resident Golden Eagle, but perhaps the stars of the day were the hundreds of spawning Common Frogs, some of them on Riggindale Crag itself.
After our walk we headed to a pub at Askham and then had a walk along the River Lowther, where we saw three Dippers and a Goosander.




Riggindale Crag and High Street. It was cloudless, and so still that the water was like a mirror.


Looking up Riggindale Crag towards High Street.


Looking towards Helvelyn from the summit of High Street.


There were lots of Ravens today, with one soaring flock consisting of 15 birds.


Common Frogs in a pool on Riggindale Crag at a height of about 600m.


How do they survive in this place, 600m up and surrounded by cliffs on all sides? Goodness knows what the temperature might fall to in the winter.

Saturday, 10 March 2012

Rainford mosslands

I biked it around the Rainford Mosslands this afternoon. At Inglenook Farm a Peregrine hunted Starlings and Lapwings in spectacular fashion, stooping at them from a great height, and at fearsome speed, but I didn't see it take any. Elsewhere there were plenty of Lapwings displaying and Skylarks singing, but otherwise it was fairly quiet.

Eccleston Mere

Mute Swan 1 juv.
Tufted Duck 5
Kingfisher 1

Lots of resident species singing, Wrens, Robins, Dunnocks etc., but no sign of any migrants yet. Won't be long though if it stays as mild as this and the winds stay in the south.

Monday, 5 March 2012

Hesketh Out Marsh and Crossens Marsh

It was back to Hesketh Out Marsh and Crossens Marsh this morning, to bring in the pitfall traps. Once again we were very lucky with the weather. Plenty of bird activity, but nothing that you wouldn't expect. Lots of Skylarks singing, Redshank and Curlew calling, the occasional Little Egret and lots of Shelduck and Teal. What more could you ask for? A wonderful experience!


Hesketh Out Marsh, looking towards the breach.


Ready for action at Crossens Marsh!

Saturday, 3 March 2012

Eccleston Mere

Not much to report in the way of birds at the mere today, but one of the anglers had just caught this impressive Pike. Apparently this is by no means the largest Pike in the mere. It looks pretty fearsome to me!




Friday, 2 March 2012

Hesketh Out Marsh close up

Over the past few months I've been involved in a study of invertebrates at RSPB Hesketh Out Marsh and Crossens Marsh, on the Ribble estuary. The study involves the use of pitfall traps to catch insects and other invertebrates at the two sites, and these are then taken back to the lab where I identify and count them, so that a comparison can be made. Today we went out to set the traps in order to get some more samples.


This is the "bus shelter" hide at Hesketh Out Marsh, and is about as close as most visitors can get to the marsh.


However, armed with the necessary permission, relevant wading gear and collecting equipment, we headed out into the centre of the marsh.


Saltmarsh may seem like the sort of habitat which has remained unchanged since the dawn of time, one of the last wild places untouched by the hands of Man, but Hesketh Out Marsh is actually a vision of the future rather than an image of the past.

Up until 1980, this was indeed saltmarsh, but then a sea wall was built around the land, and it was converted to farmland. In 2006 the RSPB bought the land and breached the sea wall, allowing the sea to flood in again, which in turn allowed the saltmarsh to begin to return. The photo above shows the breach, which has now been made much wider than it initially was, by the actions of the sea. Not only does this provide a great new habitat for many saltmarsh creatures, it is also a form of managed realignment in the face of rising sea levels due to climate change.


This photo is also taken next to the breach.


Using a special tool, we sink pitfall traps into the ground, to catch ground dwelling invertebrates. The catches are usually dominated by spiders, ground beetles, rove beetles (staphs), water beetles, water bugs, amphipods, woodlice and springtails.


A lid is placed over the trap, using the two sticks to leave a 10mm gap. This is to stop larger creatures getting in, such as small mammals. The area is covered by the sea on spring high tides, which means that we are only able to set the traps during neap tides, since they need to be left out for a few days.


The sea really carves out the land, and at the moment Hesketh Out Marsh is a very dynamic and changing place.


It was a glorious day to be out on the marsh, with the calls of Redshank never far away. Shelduck were calling and chasing each other across the marsh, and the song of Skylarks filled the air, heralding the arrival of spring!

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