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, September 09, 2012

Pre migration moult in Baltic Lesser black-backed Gull(Larus fuscus fuscus), Skeppsbron; 9th September 2012







 Four shots here of the same bird, a light phase Baltic Lesser Black-backed Gull, a 1st Calender bird. This individual I have been refering to as Bird A. Many of the salient features can be seen here, these are well marked birds with much contrast. It is apparnt that this bird has begun moulting, with mantle feathers and 9 or ten scapularsmalready having been replaced. It had been intially thought these birds didn't moult until they reached the winter grounds after migration, but many do in fact. This bird has been present at the site for some weeks and was the first bird to begin moulting...



 Here, by contrast, is another individual. I have been making notes on these birds and this one I refer to as Bird C. It shows no moult whatsoever and is a little smaller and darker overall than the other regular birds onsite. Certainly, not all birds begin moult before they leave...





Here is a third individual, refered to as Bird B. This is also a light phase type, a particularily beautiful bird, with crisp markings and now rather ghostly pale head and body. The birds were very cooperative today as they were well fed by a group of tourists and were resting up on the dock. It was apparent that this bird to had started to moult on inspection, though not as adanced as Bird A. The date of moult begining may be corelated to date of birth, the older birds showing moult before other, younger birds. It would be nice if these birds hung around for a few more weeks, but the reality is they could leave for the winter grounds any day now...



2 comments:

Mars Muusse said...

Hi Alan,
Beautiful images of the Baltic Gulls. Together with some gullaholics from various countries, we try to put together information on plumage development. If I mention your name as photographer, is it okay to use one image for the website Gull Research Organisation?
(please reply on marsmuusse at gmail dot com).

Mars Muusse said...

Hi Alan, beautiful photos of the Baltic Gull. Together with some gullaholics from various countries we try to put together information on plumage development. If I mention you as photographer, is it okay to use 1 image for the website Gull Research Organisation? (please reply on marsmuusse at gmail dot com).