Birds with high levels of stress hormones have the highest mating success and offer better parental care to their brood, according to new biology research at Queen's University.
(Phys.org)—A Royal Veterinary College study has found that hens reared in commercial conditions do not form friendships and are not particular about who they spend time with.
Birds do it. Bees do it. Fish, lobsters, frogs and lizards do it, too. But when it comes to securing a mate in the animal world, variety is literally the spice of life.
Researchers at Columbia University Medical Center have discovered that the skeleton acts as a regulator of fertility in male mice through a hormone released by bone, known as osteocalcin.
The question 'How do songbirds sing?' is addressed in a study published in BioMed Central's open access journal BMC Biology. High-field magnetic resonance imaging and micro-computed tomography have been used to construct ...
(PhysOrg.com) -- For insects, as for humans, mating can involve complicated interactions between males and females, with each partner engaging in rituals or behaviors that influence the other.
Sheep keep having twins even in old age, say scientists.
(PhysOrg.com) -- Old roosters can still dominate the sexual pecking order even when their ability to fertilise eggs drastically declines, new Oxford University research has shown.
(PhysOrg.com) -- Female dolphins who have help from their female friends are far more successful as mothers than those without such help, according to a landmark new study.
Does the environment encountered early in life have permanent and predictable long-term effects in adulthood? Such effects have been reported in numerous organisms, including humans.