1st Calender
1st Calender
1st Calender
1st Calender
1st Calender
1st Calender
1st Calender
2nd Calender
2nd Calender
2nd Calender plus, on balance probably at the end of its second year due to dark eye, largely dark bill. These birds can be tough to age and I have difficulty ruling out a third year bird due to hint of white tips to primaries, the appearance of the tertials etc.
2nd Calender, based on dark eye, largely dark bill, lack of white spots on primary tip and appearance of wing covert's...
2nd Calender? Note the newly moulted inner tertials, dark eye. The bill is rather pale and there is a suggestion od white primary tips..
3rd Calender? Some of these birds can be tough to age..
A comparison here between a 2nd calender bird to the fore, with a 1st calender bird at the rear.
2nd Calender or older? A slightly confusing bird, a little advanced on the mantle and scapulars? Primaries lack white tips and are seconde generation, eye is dark, bill mostly dark. Note the new inner tertial.
3rd Calender. Not as advanced as the bird below, note the smaller white spots at tips of primaries, pale iris, largely yellowis bill and tertials are all 3rd generation. Not as much moult evident on the wing covert's as yet...
3rd Calender, median and lesser coverts have been replaced, white spots at tips of primaries, note the yellowish tones on the bill...
4th Calender. Note the dark flecks on the tertials. In flight showed dark markings on the primary covert's. The bill differs from the adults below, a more extensive and darker, complete band near the tip..
Adult
Adult
Adult
Adult. A dark eyed individual that has benn around the site for at least two years, this bird never shows a heavily patterned head in winter, rather lightly streaked. The orbital ring is bright red.
Photos here of Argentatus Herring Gulls, aged and captioned, the youngest age at the top and the oldest, adult birds, at the bottom..
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1st Calender
1st Calender
1st Calender
1st Calender
1st Calender
1st Calender
2nd Calender
2nd Calender
2nd Calender plus, on balance probably at the end of its second year due to dark eye, largely dark bill. These birds can be tough to age and I have difficulty ruling out a third year bird due to hint of white tips to primaries, the appearance of the tertials etc.
2nd Calender, based on dark eye, largely dark bill, lack of white spots on primary tip and appearance of wing covert's...
2nd Calender? Note the newly moulted inner tertials, dark eye. The bill is rather pale and there is a suggestion od white primary tips..
3rd Calender? Some of these birds can be tough to age..
A comparison here between a 2nd calender bird to the fore, with a 1st calender bird at the rear.
2nd Calender or older? A slightly confusing bird, a little advanced on the mantle and scapulars? Primaries lack white tips and are seconde generation, eye is dark, bill mostly dark. Note the new inner tertial.
3rd Calender. Not as advanced as the bird below, note the smaller white spots at tips of primaries, pale iris, largely yellowis bill and tertials are all 3rd generation. Not as much moult evident on the wing covert's as yet...
3rd Calender, median and lesser coverts have been replaced, white spots at tips of primaries, note the yellowish tones on the bill...
4th Calender. Note the dark flecks on the tertials. In flight showed dark markings on the primary covert's. The bill differs from the adults below, a more extensive and darker, complete band near the tip..
Adult
Adult
Adult
Adult. A dark eyed individual that has benn around the site for at least two years, this bird never shows a heavily patterned head in winter, rather lightly streaked. The orbital ring is bright red.
Photos here of Argentatus Herring Gulls, aged and captioned, the youngest age at the top and the oldest, adult birds, at the bottom..
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