Main content

Vegetarian Tree Finch

Chris Packham presents the vegetarian tree finch on the Galapagos Islands.

Tweet of the Day is the voice of birds and our relationship with them, from around the world.

Chris Packham presents the vegetarian tree finch on the Galapagos Islands. These streaky sparrow-like birds found on the Galapagos Islands may look rather plain, but belong to the evolutionary elite, having attracted the attention of Charles Darwin on his visit there in 1835. Darwin noticed that the fourteen or so species of finches, which he concluded were derived from a common ancestor on this isolate archipelago, had evolved bills adapted to the type of food available. The Vegetarian finch has a bill rather like a parrot's, with thick curved mandibles and a biting tip which also allows it to manipulate seeds, similar to a parrot or budgie. Vegetarian finches are especially fond of the sugar-rich twigs of certain shrubs and are use the biting tip of their bills to strip off the bark to reach the softer sweeter tissues beneath: a niche that other finches on Galapagos haven't exploited yet.

Available now

2 minutes

Last on

Mon 12 Aug 2019 05:58

Vegetarian finch (Platyspiza crassirostris)

Webpage image courtesy of Tui De Roy / naturepl.com

NPL Ref 01399163 © Tui De Roy / naturepl.com

Recording of vegetarian finch by Robert I Bowman / Ref: ML82511

This programme contains a wildtrack recording of the vegetarian finch kindly provided by The Macaulay Library at the Cornell Lab of Ornithology; recorded by Robert I Bowman on 29 Jan 1962, in Charles Island, Galapagos, Ecuador.

Broadcasts

Podcast: Planet Puffin

Podcast: Planet Puffin

Exploring all things puffin - the silly and the serious, the scientific and the cultural.

Try this new podcast

Try this new podcast

Five stories of birds and birdsong are told by the people inspired by them.

Podcast