March, 2012

Ham Wall

Ham Wall
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Ham Wall

  • Recent Sightings at RSPB Ham Wall 30.03.2012

    It's been a very warm week on the reserve as everywhere and there's been a real buzz of activity. Birds are most definitely on the move with a few Swallows seen on the reserve this week as I reported in a previous blog. However, it appears that some Sand Martins did beat them after all. On Thursday a lady reported to me that she'd seen quite a large group come through nearly two weeks ago and this morning a gentleman told me he'd spotted 3 on Monday whilst watching a Great White Egret.

    Around the same time he'd also seen 2 Cranes flying over and 2 of the released Cranes on the levels at West Sedgemoor had been reported out this way, so it could of been them. Other significant 'movements' include the sighting of an Osprey at Ham Wall on Saturday (24th) and a Sedge Warbler heard chattering away in the reedbed on the right of the railway line behind the first bench the same day. Also heard today - the first Willow Warbler of the season on the rail path trees close to Waltons.

    The warm weather has seen a significant number of butterflies on the reserve - many much earlier than usual. Peacock, Red Admiral, Small Tortoiseshell, Speckled Wood, Green-veined White, Orange Tip and Brimstone all seen this week.

    Peacock butterfly: John Crispin.

    Last weekend saw Bearded Tits appearing again in the Waltons section. They have been spotted/heard frequently in non-access parts of the reserve, which is great, but to see them more frequently in the public areas is fantastic! Lets hope they now begin to colonise this part of the reserve this year by breeding in these areas and giving our visitors a real treat.

     Bitterns, are of course still booming strongly and there is thought to be as many as 30 booming males across the Avalon Marshes at present and this figure could rise further over the coming weeks with more early morning 'bittern listens' planned. Flights are still more difficult to come by at the moment but the first viewing platfrom offers a great vista and the best chance of a sighting.

    Great White Egrets are still being seen and there is still thought to be at least 3 in the marshes still, including the ringed bird. Marsh Harriers are also seen but maybe not quite as frequently as a few weeks ago, although a handsome looking male is using Waltons and Loxtons fairly regularly. A second, younger male has also been seen on occasions but a lot less female activity.

    Sparowhawks are being seen most days and one flew right in front of the viewing platfrom really close in on Thursday. The visitors who were up there missed it as they were engrossed in something else at the time. Just shows how easy it is for things to pass you by. Last Saturday morning around 6.10am one of our volunteers John Crispin saw a female Sparrowhawk down a female Mallard and managed to get the shot below. The bird was then spooked and flew off leaving the poor Mallard to hobble into the reeds. It was looked for but not found.

    Kingfishers can still be seen with the old railway bridge as you come into the reserve still a hotspot, where birds are seen flying up and down the surrounding drains, a lady reported seeing one here on Thursday afternoon.

    The rail path trees still offer great bird song especially in the morning for a dawn chorus: Blackcaps can now be heard easily, Willow Warbler as mentioned, Song Thrush, Blackbird, Wren, Dunnock, Goldcrest, Goldfinch and Chaffinch to name but a few. Treecreeper has also been spotted in the usual Alders between Loxtons and the rail path.

    Also this week: Raven flying and calling over Waltons on Thurs, 2 Jays on the north of the reserve but also seen at the back of Waltons and by Street Heath (next to Loxtons the other side), 2 Greylag Geese flying over on Thursday, Great Spotted Woodpecker, Little Egrets feeding in Waltons, groups of snipe and single birds at a few different locations, Small groups of Lapwing in Waltons but also several pairs displaying at various locations, and extremely vocal Water Rails and Little Grebes. Several Pairs of Great Crested Grebe on site seen displaying and signs of nest building with the best views in Waltons, in front of the 1st platform and from Loxtons screen.  

    Well, I think that's it for now - apologies again if you came across this blog half complete previously - hope you find it fully intact this time. Have an enjoyable weekend even if the weather has turned a little colder!








  • Owl Boxes at Ham Wall.

    Staff and volunteers had a busy day on Wednesday erecting Barn Owl boxes at various locations on the reserve. The Barn Owl is usually associated with farmland, hunting for small mammals around field margins and in rough grassland. Their population has declined, mainly as a result of reduced food supply, caused by changes in farming practices. The loss of old barns and an increase in road deaths have also contributed. We can do something to help though, by providing prey rich rough grassland areas and providing suitable nesting sites.

    Here are a couple of new boxes erected at Ham Wall this week:

    Barn Owl box on Alder Tree

    Box in an Oak

    We now have 13 Barn Owl boxes out on the reserve - many of this triangular design but we also have larger square boxes erected on old telegraph poles where suitable trees did not exist. Examples of these can be seen along the railway track on the Shapwick Heath reserve at the Shapwick Road end. We had at least 2 pairs last year, with 3 owlets each which were subsequently ringed but many of the other boxes have been used as roost sites.

    As well as Barn Owl boxes we have also, in recent months, erected 2 Tawny Owl boxes and a Little Owl box. 

    The pictures show 2 different designs of Tawny Owl box.............

    ...........and we haven't stopped there. We've also erected more bat boxes (now totalling around 25) - some visible from the old railway path through the reserve. We have had pleasing results with our previous boxes, with Soprano Pipistrelle in particular taking a liking to them. There are a few other species of bat known to frequent the reserve too. With all these and around 50 small bird boxes put up over the years it's box heaven for our wildlife. Some good results to show for it soon too we hope.

    Bat boxes on the old rail path

  • First Swallows of the season at Ham Wall

    Reported to me today at 3.30pm ( I missed them by seconds myself), 2 Swallows flying left to right in front of the first viewing platform at Ham Wall.  No Sand Martins as yet but only a matter of time.

    Also a great looking male Marsh Harrier hunting over Loxtons 3.35pm and another male seen just a litle earlier.

    Bitterns booming everywhere, Bearded Tits and 6 species of butterlfy seen on the reserve today!

    More info to come on sightings in Fridays Blog.