The tail of the European curlew

The tail pattern of all subspecies of European Curlew versus Slender-billed Curlew

As can be seen from pictures and descriptions the tail pattern of Slender-billed Curlew is unique and therefore can be of help to tell Slender-billed Curlew in all plumages apart from all subspecies of Curlew.

see:

https://radioactiverobins.com/archive/snipes-waders/european%20curlew%20numenius%20a.arquata.htm

   https://radioactiverobins.com/archive/snipes-waders/steppe%20curlews%20num%20arq%20sschkini.htm

   https://radioactiverobins.com/archive/snipes-waders

/eastern%20or%20russian%20curlew%20numenius%20a.orientalis.htm

https://www.radioactiverobins.com/slender-billed-curlew/

European-Russian-Curlew-tail-pattern-arquata-orientalis-Message-Taylor-2005-P.165-SHOREBIRDS-PRINCETON-UNIVERSITY-ISBN.jpg
Slender-billed-Curlew-tail-pattern-taken-from-Message-Taylor-2005-p.164-SHOREBIRDS-PRINCETON-UNIVERSITY-PRESS.jpg
Tail-pattern-of-northeast-European-Curlew-19112020-2-The-Netherlands-c-Adri-de-Groot.jpg
Tail-pattern-of-northeast-European-Curlew-19112020-3-The-Netherlands-c-Adri-de-Groot.jpg
Tail-pattern-of-northeast-European-Curlew-19112020-4-The-Netherlands-c-Adri-de-Groot.jpg
Curlew-Numenius-a.arquata-1CY-08112019-6249-The-Netherlands-c-Norman-Deans-van-Swelm-1024×452.jpg
Curlew-Numenius-a.arquata-ad-23012020-2254-The-Netherlands-c-Norman-Deans-van-Swelm-1024×530.jpg
Curlew-Numenius-arquata-ad-04032020-4867-The-Netherlands-c-Norman-Deans-van-Swelm-1024×533.jpg
Curlew-Numenius-arquata-ad-23012020-2225-The-Netherlands-c-Norman-Deans-van-Swelm.jpg
Curlew-Numenius-arquata-ad-flight-04032020-4520-Port-of-Rotterdam-The-Netherlands-c-Norman-Deans-van-Swelm-1024×543.jpg
Curlew-Numenius-arquata-ad-underwing-08112019-6430-The-Netherlands-c-Norman-Deans-van-Swelm-1024×597.jpg
Diagnostic-tail-pattern-Slender-billed-Curlew-Numenius-tenuirostris-2CY-04042020-SW-Netherlands-c-Norman-Deans-van-Swelm.jpg
Curlew-Numenius-a.arquata-ad-02032021-6347-Stellendam-The-Netherlands-c-Norman-Deans-van-Swelm.jpg
Curlew-Numenius-a.arquata-ad-02032021-6380-Stellendam-The-Netherlands-c-Norman-Deans-van-Swelm.jpg
Curlew-Numenius-a.arquata-ad-02032021-6381-Stellendam-The-Netherlands-c-Norman-Deans-van-Swelm.jpg
Curlew-Numenius-a.arquata-ad-02032021-6382-Stellendam-The-Netherlands-c-Norman-Deans-van-Swelm-1024×610.jpg
Curlew-Numenius-a.arquata-ad-02032021-6382a-Stellendam-The-Netherlands-c-Norman-Deans-van-Swelm.jpg

https://www.radioactiverobins.com/the-tail-of-the-european-curlew/