Illustrations made for Doctoral Thesis 
Rien E. van Wijk (2016) “From routes, non-breeding sites and timing to reproductive success – migration patterns in Hoopoes and Wrynecks” Zurich, Zwitserland

Hoopoe – head

Hoopoe – back

Hoopoe – wing inside

Hoopoe – wing outside

Hoopoe – tail

Hoopoe (1-3) & Wryneck feather(s) (4)

Wryneck – back