All Change

After a cold and snowy end to last week,  Sunday saw me arriving to find almost the whole of Ibsley Water frozen over and Ivy Lake completely so.

frosty silt pond

Ivy Silt Pond on Sunday morning

Things actually started to thaw during the day on Sunday, so that by the end of the day there was more open water, at least on Ibsley Water.

goosander flock preening

a group of goosander preening near Lapwing hide

The cold resulted in a typical increase in the number of common gull in the roost, with over 400 reported and, more excitingly, the return of the ring-billed gull, probably it had come in with the common gull influx, but where has it been?

Even at dusk  on yesterday Ivy Lake was still frozen over and this seemed to put off the cormorant roosting flock, instead of the usual 150 or more birds there were just two! Others did fly in and around the trees but headed off elsewhere. A single great white egret, probably “Walter” roosted in the trees, but away from the two cormorant.

Today was quite different, mild and wet, a combination of snow melt and rain resulted in the Dockens Water flooding through the alder carr and into Ivy Lake, probably to the great relief of the bittern which was back in the reedmace at Ivy North Hide as I locked up this evening.

bittern

Bittern in the reedmace below Ivy North hide

I am pretty confident that every sighting of bittern that I have had this winter has been of the same bird, as have been all the pictures I have seen. On a couple of occasions I have seen threat behaviour that I would usually associate with there being a second nearby, but have never seen another bird. So reports of two seen on Friday were interesting, although the second bird could just have been displaced by the cold as they often are when lakes freeze. However today I see that two were seen in early January, so perhaps there really have been two all along! As they are territorial it may just be that the second is usually too far from the hide for us to see it, there is a good bit of reedbed off the west of the Ivy North Hide where it would be very difficult to see a lurking bittern.

By dusk this evening it was quite hard to see very much in any case, as the mist descended over the lakes.

misty Ivy Lake

Misty Ivy Lake (actually the bittern is in this picture, but I doubt you can see it!!)

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Then the Thaw

Sunday was a day of great change, at first the snow was still thick in many places, turning to slush on the paths, but still making the roads a little difficult in places.

After the cold of the previous few days the warm sun of a proper springlike day was very welcome. The change during the day was remarkable, by lunchtime the entrance track was largely clear of snow and the Dockens Water was starting to rise and flood through the woodland.

Dockens Water

Dockens Water levels starting to rise

There rapid change resulted in some unusual sightings, perhaps the oddest and something I don’t think I had seen before, was a banded snail crawling across the snow surface. Unfortunately when I tired to take a picture it retreated into its shell, so in the picture you can just see the foot still out, but the rest of the body is hidden.

snail on snow

snail on snow

Another unusual sight, although not as surprising, was that of scarlet elf-cup poking up through the snow.

Elf cup in snow

scarlet elf-cup in snow

I noted in the morning that there were still no lapwing on the nesting areas, I have known birds to be egg-laying by the first week of March. However by the afternoon in the sunshine there were two males on territory on the former Hanson plant site and several more wandering around the shore nearby.

By the end of the day the Dockens Water was flooding through the alder carr and through the silt pond into Ivy Lake.

alder carr flooding

Dockens Water flooding through the alder carr

Having not been on the reserve fro a few days it was pleasing to see that there are still a good few brambling around the Woodland hide along with 8 or more reed bunting. In the afternoon the ring-billed gull was in the gull roost and, rather late in the day and distantly, also the Thayer’s gull.

A Ringed-bill and lots of Water

Not so busy on the reserve today, typical really as today the bittern performed quite well being seen several times, having avoided successfully the crowds yesterday. I was unable to get out on the reserve for most of the day but a quick trip to the Goosander hide I arrived just as the ring-billed gull landed on the rails.ring-billed gull 1

As you can see this allowed me to get my very own, rather poor, pictures of it.ring-billed gull 2

At dusk, I counted 168 cormorant at the Ivy Lake roost, two short of yesterday’s figure. The Dockens Water which was so high again overnight as to be flowing into Ivy Lake during the morning, was flowing back out again by the evening. The lakes generally are neutral to slightly alkaline, but the Dockens Water is an acidic stream flowing off the New Forest bogs, so when it flows into Ivy Lake it changes the pH. It also probably helps to flush away some of the nutrients that are “imported” by the nightly gathering of cormorant.silt pond reflections

When the Rains Came

Bird News: Ibsley Waterblack-necked grebe 3 (but probably 4). Ivy Lakebittern 2, Cetti’s warbler 1, water rail 2+.

There was a bit of a change in the weather today, after mild and often sunny days today was cold  (no better than 6 degrees) and very, very wet. At Blashford I recorded 30mm of rain today. As it was the first Sunday of the month it was volunteer task day, unlike Thursdays when the weather always seems to be fine, we have been rained off a few times on Sundays and today was one of them. The rain also kept the number of visitors down, but the fact that we have hides to keep dry in and bitterns and other things to see, there were still quite a few people around.

Dockens Water in flood

The flooded Dockens Water over flowed into the silt pond and then on into Ivy Lake, so tomorrow the lake might finally be filled again. The rain will also raise the level of Ibsley Water, although not by nearly enough to bring the water up to the base of the sand martin wall, which is a worry for the colony, which will be much less secure from predators if there is dry land below the nest holes.

The river did not really start to rise until the early afternoon, by which time the rain had stopped and, for a time at least, the sun came out. I took the chance to get out, just below the Centre the nyger feeder was packed with redpoll and siskin.

redpolls and siskin (and yes, that is a bit of a goldfinch's tail in the top right)

Two bitterns performed well for the visitors at the Ivy North hide for much of the day and I saw both fishing there at the end of the day.