Acrocephalus palustris - Autumn

Acrocephalus palustris - autumn

Marsh Warbler

AGE – BEST CRITERIA:

In 1cy, whole plumage is fresh, including whole wing and tail. Adult shows worn wing and tail. Colour of iris is supportive.

1cy:

Whole plumage (including wing and tail) is fresh. Signs of wear starts to show in tips of PP during mid or late autumn.
Colour of iris is rather cold greyish.

2cy+:

Whole plumage (including wing and tail) is worn, often notably so in GC, PC, TT, tips of PP and tail.
Colour of iris is warm brownish.

1cy August. LC, MC and GC are fresh (regardless wether juvenile or post-juvenile). [CP46848]

2cy+ July. Whole wing, including LC, MC, GC, and PC, is worn. [CP38833]

1cy August. Uniform and typically fresh juvenile RR. [CP46848]

2cy+ July. Note the typically worn pre-breeding tail of adult. [CP38833]

1cy August. The juvenile PC are typically fresh. [CP46848]

2cy+ July. The pre-breeding PC in adult birds are worn, with abrasion showing in tips and edges. [CP38833]

1cy August, showing uniform and fresh juvenile TT. [CP46848]

2cy+ July. Adult birds show uniform and worn pre-breeing TT. [CP38833]

1cy August. Colour of iris is rather cold grey. [CP46848]

2cy+ August. Colour of iris is warm brown. [CP46782]

More Acrocephalus palustris:

Ageing spring
Moult
Identification

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