Description
Passeriformes: a) Chiffchaff (Phylloscopus collybita, or Sylvia rufa); b) Willow warbler (Phylloscopus trochilus, or Sylvia trochilus); c) Wood warbler (Phylloscopus sibilatrix, or Sylvia sibilatrix). Chromolithograph after a watercolor by Emil Schmidt, published in 1887.