Raptors of the World - James Ferguson-Lees, David A. Christie - Google Books

http://books.google.de/books?id=hlIztc05HTQC&printsec=frontcover&dq=raptors+of+the+world&hl=de&ei=cGQsTJaLGNmhsQapkKWkAg&sa=X&oi

The newest addition to the highly regarded Helm Identification Series, which includes Seabirds (“unparalleled achievement,” “best bird guide of any kind or of any generation,” “sets the standard of excellence”) and Shorebirds (“a superb guide,” “a landmark…

Raptors of the World - James Ferguson-Lees, David A. Christie - Google Books

http://books.google.de/books?id=hlIztc05HTQC&printsec=frontcover&dq=raptors&hl=de&ei=AdmMTfb2EMbvsgb4rMH9CQ&sa=X&oi=book_result&

The newest addition to the highly regarded Helm Identification Series, which includes Seabirds (“unparalleled achievement,” “best bird guide of any kind or of any generation,” “sets the standard of excellence”) and Shorebirds (“a superb guide,” “a landmark…

Category:Tringa semipalmata – Wikimedia Commons

https://commons.wikimedia.org/wiki/Category:Tringa_semipalmata?uselang=de

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The National Geographic Magazine - Google Books

http://books.google.de/books?id=95l-AAAAMAAJ&q=%22St.+Stephen's+Tower%22

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Göttinger Universitätskatalog (GUK) - results/shortlist

https://opac.sub.uni-goettingen.de/DB=1/SET=7/TTL=1/CMD?ACT=SRCHA&IKT=1016&SRT=YOP&TRM=Meddelelser+om+Gr%C3%B8nland+&MATCFILTER=

Keine Beschreibung vorhanden.

Göttinger Universitätskatalog (GUK) - results/shortlist

https://opac.sub.uni-goettingen.de/DB=1/SET=7/TTL=1/CMD?ACT=SRCHA&IKT=1016&SRT=YOP&TRM=Meddelelser+om+Gr%C3%B8nland+&MATCFILTER=N&MATCSET=N&NOSCAN=N&ADI_BIB=

Keine Beschreibung vorhanden.

Category:Ornithology – Wikimedia Commons

https://commons.wikimedia.org/wiki/Category:Ornithology?uselang=de

Keine Beschreibung vorhanden.

http://wayback.archive.org/web/20110321102537/http://www.dec.wa.gov.au/component/option,com_hotproperty/task,view/id,165/Itemid,

Keine Beschreibung vorhanden.

https://web.archive.org/web/20110320205325/http://www.dec.wa.gov.au/content/view/3180/1560/

Keine Beschreibung vorhanden.

http://wayback.archive.org/web/20110321102633/http://www.dec.wa.gov.au/component/option,com_hotproperty/task,view/id,164/Itemid,

Keine Beschreibung vorhanden.