DNA barcode finds four new bird species
...They're big, they're colored differently, and they sing different songs. Yet even in that easy to identify group, there are hidden species," says Stoeckle. As the cost of DNA sequencing goes down, Stoeckle and other proponents of DNA barcoding envision developing a hand-held device that amateur natura...Songbirds escaped from Australasia, conquered rest of world
...e songbirds") and those with the innate ability to sing the "correct" song. True songbirds account for 4,580 of the 6,000 known Passeriformes species. (There is a total of 9,702 known species of birds.) The true songbirds are currently divided into two groups: Passerida (3,477 species, among them many fam...When male fish hum, females swim in, thanks to hormones, adaptable hearing
... like those where midshipman males build nests and sing their love songs to attract females. But the females can't process this vital information and respond appropriately if they can't hear it. Steroid hormones appear to provide a key molecule that leads to shifts in the hearing sensitivity of females."...Hormone helps fish to mate, may affect human hearing
... like those where midshipman males build nests and sing their love song to attract females. "But the females can't process this vital information and respond appropriately if they can't hear it. Steroid hormones appear to provide a key molecule that leads to shifts in the hearing sensitivity of females," ...'Extinct' bird rediscovered in Mexico
...n return next January, when the birds are known to sing more frequently, to attempt further surveys. To protect this and potentially other birds from disturbance, the exact location of the discovery is not being disclosed to the public....Bird's song may be linked to speech disorders
...ions in other species. Male zebra finches learn to sing a courtship song that their female counterparts do...science, based on studies of adult canaries, which sing seasonally." (The second team includes scientists from Germany's Max Planck Institute for Molecular...'We are the champions' the new birdie song
...tropical boubou as the first bird species known to sing a 'victory duet'. The birds probably sing to deter other birds from intruding into their territory. According to the authors, "We were able to......nds 'motifs,' and to produce a song, the bird will sing the same motif a few times, then switch to a new r...ifs they know and then mix up the motifs when they sing another song." Given this highly variable motif structure, when other starlings are learning which s...In a noisy world, how can the senses project and receive information at the same time?
... we hear when some of us chatter all day? When we sing in the shower, why doesnt the active voice smother...e simple male cricket (Gryllus bimaculatus), which sing for hours at over 100 decibels sound pressure levels (dB SPL) in order to attract females. Backgro...Backstage with a command performer
Some cells sing with the chorus, while others unwittingly achieve fame on their own. The immune system's B cell is a true diva that spends its early days preparing for the ultimate audition. Its repertoire of possible antibodies to invading microbes totals 50 millio...Six reporters named to receive 2002 AAAS Science Journalism Awards
...ry: "Nottebohm's obsession with how birds learn to sing set off a chain of discoveries that have fundamentally altered the way scientists think about the brain," Specter explained in a piece that effectively draws readers behind the scenes of scientific investigation. "It has also opened a tantalizing, if...Male birds' ability to learn song affects female mating response
...chers trained captive-reared male song sparrows to sing by exposing them to the recorded songs of wild birds. To induce variation in stress among the birds, some were placed on a restricted diet during development. Using spectrographic analysis, the researchers rated the captive-reared birds on two measur...Songbirds use mental pointer when playing tunes
...a second. At one month old, a finch first tries to sing a song that it memorized while listening to its father sing. While awake, it continues to practice singing thousands of times a day. Then it also mentally rehearses while asleep, as discovered in a different study. The finch can repeat the song pe...Humanity's din could be blocking whales' courtship songs
...thor of the Nature report, "Only male fin whales sing loud songs." "Twenty to 25 million years of evolution are being undone in a hundred years," Clark says. "There are 100-year-old whales alive today who can probably remember when the ocean was a much quieter place, and they could communicate with coll...Unwanted HRT playing havoc with songbirds
...tion. They also alter their brains, making females sing when they shouldn't. "This is very significant," says David Crews, an expert on the effects of synthetic chemicals on animal reproduction at the University of Texas in Austin. He says that until now, concrete evidence on how pollutants affect animal...Biologists uncover Darwins missing evidence for divergence of species in a warblers song
... the greenish warbler, as in most songbirds, males sing to attract mates and to defend territories," says ...in. "The greenish warblers living in the Himalayas sing songs that are simple, short and repetitive. As you go north along the western side of Tibet, moving......as borne out in the data: birds with smaller beaks sing quicker songs, with a wider range of tones. In addition to providing insights into vocal mechanics, this finding has implications for speciation - the evolutionary process by which one species splits into two or more distinct species. "As finch pop...... "Im a mom and a wife. I have a full-time job. I sing with a band on the weekends. I just dont have time to think about taking a pill every day," says Michelle Fleissner, one of the first women in the U.S. to use MIRENA. "I know MIRENA works, which means that when my husband and I have intimate time t...When it comes to song, birds spot the similarity and difference
... which song the birds would choose to sing themselves if they were t... predisposition to learn and sing that song." Nelson also studied whether the sparrows had an even ...... for how humans learn speech. Young birds learn to sing by listening to adults and then practice by listening to their own attempts. In the October 27, 2000, issue of Science, the researchers describe how the neurons involved in song generation precisely recreate during sleep the complex activities involv...