Ole Jorgen Liodden / Woodpecker finch (Camarhynchus pallidus) using stick as a tool for foraging, Galapagos. Endemic.

D. Parer & E. Parer-Cook / Woodpecker Finch (Camarhynchus pallidus) using tool to dislodge grub, Santa Cruz Island, Galapagos Islands, Ecuador

D. Parer & E. Parer-Cook / Woodpecker Finch (Camarhynchus pallidus) using tool to dislodge grub, Santa Cruz Island, Galapagos Islands, Ecuador

Pete Oxford / Finch specimens at the Charles Darwin Research Station, Puerto Ayora, Santa Cruz Island, Galapagos Islands, L to R Top: Large Ground Finch (Geospiza magnirostris), Woodpecker Finch (Cactospiza pallidu...

Tui De Roy / Woodpecker Finch (Camarhynchus pallidus) using cactus spine to extract grub from dead wood, Santa Cruz Island, Galapagos Islands, Ecuador

Tui De Roy / Woodpecker finch (Camarhynchus pallidus) searching for grubs, Galapagos

Tui De Roy / Woodpecker finch (Camarhynchus pallidus) searching for grubs, Galapagos

Tui De Roy / Woodpecker finch (Camarhynchus pallidus) searching for grubs, Galapagos

Tui De Roy / Vegetarian finch (Camarhynchus crassirostris) feeding on Erythrina flower stamens, Galapagos

Tui De Roy / Vegetarian finch (Camarhynchus crassirostris) portrait, Galapagos

Tui De Roy / Vegetarian finch (Camarhynchus crassirostris) feeding on Erythrina flower, Galapagos

Tui De Roy / Small tree finch (Camarhynchus parvulus) feeding on seasonal Erythrina flowers Galapagos