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

Monday, January 24, 2011

Herring Gull; 3rd Calender Argentatus; January 2011

This bird shows a pinkish based bill with extensive dark band. Pale headed and dark eyed. The mantle and scapulars have been moulted as well as a single tertial. Note the brownish rounded primaries on this bird.



Many bird appeared as this bird does, perhaps this might be described as a classic third calender in January...


A fourth calender bird for comparison. This bird is more advanced with regard to a pale yellowish iris and more adult like bill. The mantle and scapualrs are uniformly grey. Coverts and tertials are largely juvenile...note the whitish markings at the tips of the primaries. This bird, in common with other 4th Calender birds, displayed new inner primaries of 3rd generation, grey adult tone...



These birds are very variable. This one shows a pinkish bill base, light iris, though not yellow in colour. Mantle and scapulars show some dark streaked feathering. Small white mirrors are apparent on the upperside of the primaries. No extensive mirror is apparent on the underside of P10. A somewhat intermediate bird, did not see the inner primaries on this bird and so this bird is diffcult to age with 100 per cent certainty, best called a 3rd Calender plus...



Some more reference shots of Argetatus Herring Gulls from Skeppsbron...

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