singing

Comparison of Beak use in Darwin’s Finches.  Stippled illustration showing singing, feeding, and preening.

Beak comparison in Darwin’s finches showing use feeding, singing, and preening.  Line drawing.

Singing Darwin’s Finch Geospiza fulginosa showing beak in use.  

Singing Darwins Finch Geospiza fuliginosa.  Line drawing showing Galapagos finch and beak use.

Darwins Finch Geospiza magnirostris with Tribulus seed.  Stippled illustration showing beak adaptability.

Darwin’s Finch Geospiza magnirostris with Tribulus seed (line drawing)

Cricket diagram Gryllidae watercolour wash over pen and ink stippled illustration

Hemipteran bug diagram showing the general form of these insects, black and white, stippled, cut to white, watercolour wash, cut to white, cicada

Stonechat Saxicola rubicola male singing with open beak and perched in some flowering gorse Ulex