finch

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finch

a bird in the family Fringillidae; includes about 125 species, many of them companion birds such as the common canary, linnets, goldfinches, the zebra and Bengalese finches.
References in periodicals archive ?
The common ancestor of the finches probably had a pointy beak, and some species later developed blunt beaks better for crushing seeds.
Medium ground finches (Geospiza fortis) on the island Daphne Major, for instance, evolved pointier beaks after a drought in 1985 and 1986.
The Centrality of Finches to the Development of the Theory of Evolution
The first place to look for a record of the role of Darwin's finches in Darwin's thinking is in his published works, especially The Voyage of the Beagle (2) and The Origin of Species (3) where he argued for evolution by natural selection, an analogy for formation of new species.
4 -- 5 -- color) A jay stands guard over the feeder at Barbara Thomas' home in Calabasas, above center, while gold finches splash in the bird bath at Ayers' West Hills home.
About 60 years ago, when your grandparents were kids, some California pet dealers got the idea that house finches would make great pets.
Anyway, the dealers caught some house finches and sold them to pet stores in the East.
Huber studies the species called medium ground finches (Geospiza fortis).
These finches are demonstrating the kinds of changes that could lead to a split into two new species, Huber says.
The finches poke twigs or cactus spines into crevices to dig out insects, explains Sabine Tebbich of the Max-Planck Institute for Behavioral Physiology in Seewiesen, Germany.
The birds, commonly known as Darwin's finches, also possess physical traits that are highly inheritable, such as weight and bill size.
The loss of neurons in the MAN suggeststo Bottjer that zebra finches are born with a wide capacity for possible notes and that later, once they've learned the species' songs, they discard the cells for notes they no longer need.