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|Blyth's Reed Warbler (Acrocephalus dumetorum) Reed Warblers and Allies (Acrocephalidae)|
|Buskrørsanger Carricero de Blyth|
2020-06-07 Kalvebod Fælled, Amager, Denmark
Along Ellevehøjvej in a stretch with Buckthorn more than willow bushes. Was discovered earlier today where it was more cooperating than when I visited. During 3 hours in the evening the vocalization in this recording was practically all it gave. It's not a very obvious documentation but the slow repeated dy dy dy sequences are typical of the species and would be rare with any of the other acrocephalus warblers.
My first on Amager.
Also: Eurasian Blackbird, Common Chaffinch, Greater Whitethroat, Tree Pipit, Common Cuckoo, Willow Warbler.
2021-06-24 Kalvebod Fælled, Amager, Denmark
Male. A singing bird. Discovered by SKR last Friday, by sound, with doubts about its identity, sitting right in the middle of a Marsh Warbler territory - or several. But confirmed by sound and photos today.
These photos are perhaps not conclusive, but still show some of the characters to look for: Long bill, dusky distal lower mandible, apparently short primary projection. Picture 1 though blurred, gives the feeling of a short wing. The eyebrow bright in front of the eye is also a good indication as is the flat forehead and the overall cold colors. The last blurry photo just added to show the long undertail coverts - trait of the Acrocephalus-warblers.
The bird didn't sing when I was there, but I recorded the soft tjek call that is characteristic when compareing with the realistic candidates to be found at this site.
While I was there it mostly stayed low in a ditch with dense vegetation, but came up a few times sitting on the fence for a few seconds before diving back into hide.
Update: Added a long song sequence recorded the following night at 00:50. Compare this song with a Marsh Warbler, 3549, I recorded the same night.