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Tag: "finch" at biology news

Bird Brains Show How Trial and Error May Contribute to Learning

The adult male zebra finch knows only one scratchy tune learned in its youth,... when females are listening. But occasionally, the finch might improvise, experimenting with a slower, more sultry variation or emphasizing different notes. ...

Birds brains reveal source of songs

...t to the motor system." Normally, the young zebra finch nursery resounds with ever-new, imperfect variatio...l the variability, temporarily stranding the young finch with an immature version of the song. These results suggested that the AFP circuitry itself causes ...

One gene links newborn neurons with those that die in diseases such as Alzheimer's

...t of total soluble brain protein. But in the zebra finch brains, nonreplaceable neurons produced, on average, about two and a half times the amount of UCHL1 as replaceable neurons. In addition, studies from other laboratories have pointed to deficiencies in UCHL1 in degenerative diseases such as Alzheimer...

Mother birds increase progesterone to hatch females

...species, such as the Seychelles warbler, the zebra finch and tree swallow, adaptively manipulate the sex of their offspring before an egg is laid," says Stephanie Correa, a doctoral student in neurobiology and behavior at Cornell and the lead author of the study that was posted online recently in The Royal...

NHGRI Selects 13 More Organisms for Genome Sequencing

...rs will also construct a physical map of the zebra finch (Taeniopygia guttata) genome, paving the way for l...y be applicable to parasites of humans. The zebra finch was chosen because it is a major model system for understanding brain development, learning and memo...

Possible treatment found for 'chemobrain'

...rs will also construct a physical map of the zebra finch (Taeniopygia guttata) genome, paving the way for l...y be applicable to parasites of humans. The zebra finch was chosen because it is a major model system for understanding brain development, learning and memo...

Zebra finches remember songs dad sang

...e father contributes equally to childcare in zebra finch families and does all the singing, Vicario says. "...gbird species, only the male sings." A young zebra finch will hear his father's song, remember and imitate it. At first, the bird's efforts are clumsy ?the s...

Zebra finch males prefer females with exaggerated maternal traits

...researchers tested the sexual preferences of zebra finch males that were raised by white parents differing in beak color. For one group of males, the researchers painted the beak color of the mother orange and that of the father red; for another group, the mother got a red beak and the father an orange one...

New bird discovered on unexplored Columbian mountain

...nge where the bird was found. A large and colorful finch with black, yellow and red plumage, the new species differs from its closest relatives in having a black back and no white markings on its wings. It also is found in other nearby mountains in Colombia's eastern Andean range. Genetic, morphological an...

Bird sex is something else

...ith data from humans and mice. In several types of finch and embryonic chicken brain tissue, Z chromosome genes were expressed up to 40% higher in ZZ males than ZW females. This contrasts with findings from the mammal samples, where dosage compensation meant that the male: female ratio of X-linked genes is...

Cancer that colonizes our bodies

...sion by a founder species. Like the first pregnant finch that landed on a deserted island in the Galapagos Archipelago, the first cancer cell in the human body has to undergo many mutations through many generations to establish itself as an invader of different organs in the body. But once it is there, lik...

New bird, bat species revealed by extensive DNA barcode studies

...sion by a founder species. Like the first pregnant finch that landed on a deserted island in the Galapagos Archipelago, the first cancer cell in the human body has to undergo many mutations through many generations to establish itself as an invader of different organs in the body. But once it is there, lik...

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