In the heart of the Australian and New Guinea rainforests lives the cassowary, known as the world's most dangerous bird due ...

There are three morphs in ruffs that differ in their appearance and mating behavior. Males of the aggressive Independents (left) have more testosterone in their blood than the other two morphs (a male ...

Most male humpback whales in a Pacific Ocean population do not have offspring — and bad singing might be to blame, new research reveals.

Mudashiru Obasa was until January 13, 2025, the Speaker, Lagos State House of Assembly. He was first elected to the House in 2007. He was re-elected in 2011, 2014, 2019 and 2023! If his mouth allowed ...

Reproductive system diseases have become a major health challenge facing humans ... AVT can reduce the proliferation of mitotic cells and type B spermatogonia, which shows that it has important ...

25, 2024 — Drosophila is one of the most thoroughly studied lab animals -- with the exception of the female reproductive tract ... 24, 2024 — Male birds help their parents less than females ...

Reproductive disorders are diseases involving the reproductive system, including reproductive tract infections, congenital abnormalities, cancers of the reproductive system and sexual dysfunction.

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Spiders are thought to have larger females because it increases their chances of reproductive success. Male birds are more colorful to compete with other males and have a higher chance of mating ...

The androgen sex hormones are responsible for male sexual ... another hormone system or something entirely different. Thus it appears that the sexual development of birds involves a complex ...

Jan. 2, 2025 — Birds are the undisputed champions of epic travel -- but they are not the only long-haul fliers. A handful of bats are known to travel thousands of kilometers in continental ...

Reproductive biology involves the scientific study of the reproductive system. Improved understanding of reproductive biology can lead to new treatments for reproductive disorders, such as ...