Dutch Birding

Bruine Boszanger

Phylloscopus fuscatus  ·  Dusky Warbler

Datum 7 november 2012
Locatie Schifflange - Luxemburg
Fotograaf Wietze Janse Wietze Janse
Bekeken 4686 ×

Discussie

Peter de Knijff

Peter de Knijff
 ·  9 november 2012  19:32

winglength of 66 alone does not impress me, and is not enough. Why, will become more clear later this Winter on this site. Recent insight by other Swedish scientists studying nominate getting closer and closer to their abietinus population showed that only if using a rather complex formula one could identify most abietinus. On its own, something they call wing pointedness was the best single (but not perfect) character.
Richard Reijnders

Richard Reijnders
 ·  10 november 2012  00:56, gewijzigd 18 november 2012  17:12

Wat een fantastische plaat, zeg!

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