(Alca torda)

Example 1

Date: 17 nov 2001
Origin: Found dead on the beach, victim of oil-pollution
Location: Terschelling, NL
Age and sex: Adult
Feathers: Dead bird on the beach | Leftwing | Primaries | Secundaries | Greater primary coverts | Alula | Greater under primary coverts

Example 2

Date: 25 jan 2005
Origin: Found dead Eems, Emmapolder, NL
Location: Eems, Emmapolder, NL
Age and sex:  
Feathers: Rightwingfeathers | Greater primary coverts | Tailfeathers