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image: Sharks May Have Evolved from Acanthodians

Sharks May Have Evolved from Acanthodians

By | March 14, 2017

Analysis of an ancient shark fossil provides the strongest evidence to date that modern sharks derive from a class of 400 million–year-old bony fish.

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image: Opinion: Birds of a Feather?

Opinion: Birds of a Feather?

By | March 10, 2017

Taking into account the interaction of nuclear and mitochondrial genes in birds holds the promise of more objectively defining what constitutes a species.

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“Buena vista” hypothesis suggests that changes in the sizes of eyes, rather than a shift from fins to limbs, led fish to transition to land more than 300 million years ago.  

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image: Tune Into the Animal Kingdom

Tune Into the Animal Kingdom

By | March 1, 2017

A survey of sounds from birds to whales to fruit flies to fish

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 Zebra finches reared by another species learn to sing their foster parents’ song with rhythms characteristic of their genetic background.

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Zebra finches dial down dopamine signaling when they hear errors in a song performance.

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image: Understanding the Roots of Human Musicality

Understanding the Roots of Human Musicality

By | March 1, 2017

Researchers are using multiple methods to study the origins of humans’ capacity to process and produce music, and there’s no shortage of debate about the results.

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image: Song Around the Animal Kingdom

Song Around the Animal Kingdom

By | March 1, 2017

Diverse species are said to sing, but music is in the ear of the beholder.

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image: Birds May Make Music, But They Lack Rhythm

Birds May Make Music, But They Lack Rhythm

By | March 1, 2017

Birdsong bears a striking resemblance to human music, but it’s not yet clear that birds interpret it that way.

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image: Infographic: Taking Note of Singing Errors

Infographic: Taking Note of Singing Errors

By | March 1, 2017

Birds' brains respond to distorted songs with changes in dopamine signaling.

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