Group items tagged

A Splendid and Outstanding Information on History and Mystery of the birds with Heavenly Beauty- The Birds of Paradise

In a recent study, researchers show that a gene called DMRT1 found only on the Z chromosome partly explains bird "maleness". When a ZZ embryo gets less DMRT1, the embryos start to take on some female traits. These studies show us that bird gender can be partly explained by genetics. Not having enough of a single gene can keep a bird from becoming a bona fide male bird. But this doesn't rule out the possibility of a female gene being on the W chromosome. Scientists just haven't yet found one.

ScienceDaily (Jan. 20, 2011) - In birds as in people, female fertility declines with age. But some female birds can slow the ticking of their biological clocks by choosing the right mates, says a new study.

For more than a century, neuroscientists believed that the brains of humans and other mammals differed from the brains of other animals, such as birds (and so were presumably better). Researchers have now found that a comparable region in the brains of chickens concerned with analyzing auditory inputs is constructed similarly to that of mammals.

Researchers have cracked the long-time mystery of how sex is determined in birds: A dose-dependent effect of a single gene on one of the sex chromosomes does the trick, according to a study published this week in Nature.

This demo allows you to map and produce list of species anywhere for ~ 25,000 species (including all described birds, mammals and amphibians - for info check the 'Dashboard').

Bats, birds, box turtles, humans and many other animals share at least one thing in common: They sleep. Humans, in fact, spend roughly one-third of their lives asleep, but sleep researchers still don't know why.

When a cycad is ready to reproduce, it grows a large colorful cone, rich with pollen or seed. It signals its readiness by radiating heat or sending out attractive odors to pollinators, who travel back and forth. Once fertilized, the seed-rich cone is ripped apart by hungry seed carriers (who've included over the years, not just birds and insects, but dinosaurs, pterosaurs, bats; these trees have been eaten by just about everybody). But what if you can't find a mate? The tree in London (and its clones that are now growing in botanical gardens all over the world) is a male. It can make pollen. But it can't make the seeds. That requires a female. Researchers have wandered the Ngoya forest and other woods of Africa, looking for an E. woodii that could pair with the one in London. They haven't found a single other specimen. They're still searching. Unless a female exists somewhere, E. woodii will never mate with one of its own. It can be cloned. It can have the occasional fling with a closely related species. Hybrid cycads are sold at plant stores, but those plants aren't the real deal. The tree that sits in London can't produce a true offspring. It sits there, the last in its long line, waiting for a companion that may no longer exist.

If you are dealing with poultry business, you should know, how Trivedi Effect can help your business grow. It is witnessed that a number of times, many birds die before the time and thus provides a loss to the business.

Across the globe mainly in developing countries, milk is produced by small farmers, and it is a source of livelihood for them. Mr. mahendra trivedi through his spiritual energy transmission power has not only impacted human beings but also other forms of life like animals, plants, birds, etc.

The Macaulay Library is the world's largest and oldest scientific archive of biodiversity audio and video recordings. Learn more