Alan Dalton post's birding diaries and original artwork from Sweden. Established in 2006, this now long running blog is now a complete overview of my birding experiences. As an artist I greatly enjoy sketching birds in the field and you will find a wide selection of that work here, from fieldwork to finished paintings. I am very passionate about my artwork and try to depict birds in their natural habitat, as I see them in the wild. My artwork is for sale and can be viewed at http://www.alandalton.net/
As regards to my photography, since 2008 I have used a Nikon D90 DSLR camera coupled with a Sigma 150-500mm OS lens for since March 2012 for bird photography, all previous images being digiscoped. Regarding sound recording, I have been usung a Telinga Stereo Dat Mic and parabol to record birds in the field, coupled to a Marrantz 661 digital recorder, a superb piece of kit. Interest in butterflies, dragonflies and damselflies has recently seen the accquisition of a Sigma 150mm macro lens. I hope you enjoy the blog and please feel free to leave comments or contact me at alandltn@gmail.com

Sunday, August 22, 2010

graellsii/intermedius Lesser Black-backed Gull; Skeppsbron; 22nd August 2010

Coaxed the bird onto the wharf using bread. Hazy sunshine at the time of this shot, the bird obviously pale and drew immediate attention on arrival...



In flight. The most striking feature are the white flashes on the upperwing, these are the exposed bases of secondaries due to missing wing covert's. The primary covert's are darker than the covert's and two large mirrors are plainly visible on P9 and P10.

On the water with a Herring Gull, a smaller slimmer bird as one would expect...


Another shot on land. Note that the legs are not bright yellow as in adult fuscus, appearing rather muted in tone, perhaps suggesting a sub adult bird...



Wing detail. Outer primaries P7-P10 are old feathers from last spring. Mirrors on P 9 and P10, suggesting an adult bird in moult? The regrowing P6 can clearly be seen growing out. The inner primaries are fresh and new. Inner primary coverts seem new and appear grey, in contrast to older outer coverts which appear rather dark with very small whitish tips to the feathers. Missing coverts on the innerwing are cause of the bases of the secondaries being on view, which show whitish....



Another decent shot of the bird at rest on the water...



On land. Appearing a liitle darker here, due to the sun being behind cloud.



At rest on the water. Red orbital ring and adult type bill.



A useful shot despite not being pin sharp. Note here the worn central tail feather in contrast to the new outertail feathers. This bird is in active moult...




Arrived at Skeppsbron today to find this Light Mantled Lesser Black-backed Gull on site, a bird I have seen on one previous occasion in bad weather. The bird showed well today and I managed to get some very useful shots of this bird. I suspect this bird to be a sub adult bird due to the leg colour, but ageing is difficult to say the least...
With regard to race, it is most likely this is a western bird due to the moult score, having had some helpful advice on the bird. A Graellsii/Intermedius it would seem....



2 comments:

Dirk Van Gansberghe said...

Very nice pictures! Well done! Dirk

Alan Dalton said...

Hi Dirk, keep your eye out for this bird, has been around for at least a couple of weeks now,a very interesting bird. See you about soon, Alan.