... discovery adds fuel to the debate about why some female birds seek those extra mates in the first ... event of pair-male infertility.
"Because birds can store sperm for an extended period in specialized ...
... -pair" fathers may often get a head start in life, according to a new study on blue tits. The discovery adds fuel to the debate about why some female birds seek those extra mates in the first place.
(PhysOrg.com) -- Attractive males promise quality offspring. Most female birds therefore invest a lot of energy in their attempts to breed with attractive partners. Not so the female zebra finch. If ...
... nesting animals," Erickson said. "This suggests multiple females contributed the eggs and the male guarded them. ... extra bone laid down by breeding female birds and dinosaurs to make eggs) or extensive ...
... their own mates, who in turn adjust their signals to avoid the interference.
Tobias said the females' attempts to jam their partners' songs are presumably intended to make the males less attractive ...
Female birds often choose their mates based on fancy feathers. Female mammals, on the other hand ... case, Clutton-Brock and McAuliffe conclude. Female mating preferences are likely to be just as important ...
... older siblings.
Other studies have shown that polygamous female birds seek out genetically distant partners ... is now studying whether similar to humans, birds might be able to detect a mate's genetic ...
Male bowerbirds that show superior intelligence are more sexually attractive to female birds, scientists discover.
... attractiveness often
seems to be down to one completely arbitrary characteristic, like
tail length. Female birds of
paradise, for example, are suckers for a long tail, so much so
that the males have ...
"Low-quality" female birds prefer to mate with low-quality males, say researchers - challenging evolutionary theory.
Bright blue eggs keep males keen on fatherhood.
... pattern of evolution in the song occurred whether the subsequent generations of male birds were raised among female birds, who do not sing, and siblings in a colony setting or just among isolate males ...
... extra-pair offspring). It has long been known that female birds commonly mate with males other than their social ... still don't discount the possibility that females mate with extra-pair males to improve ...
... and less aggressive males. Researchers gauged the response of male collared flycatchers to female birds, to a strange object, and to other males. They found that each type of individual displayed ...
... make their nest and hunt for food. The size and position of the male's territory is also important as female birds check it out before deciding who is going to make the best father to her chicks. ...
