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Latest Brood parasites Stories

Birds Evolved Distinctive Patterns To Identify Cuckoo Eggs From Their Own
2014-06-19 03:13:09

University of Cambridge For some birds, recognizing their own eggs can be a matter of life or death. In a new study, scientists have shown that many birds affected by the parasitic Common Cuckoo - which lays its lethal offspring in other birds' nests - have evolved distinctive patterns on their eggs in order to distinguish them from those laid by a cuckoo cheat. The study reveals that these signature patterns provide a powerful defense against cuckoo trickery, helping host birds to...

Birds Accept And Raise Brood Parasites’ Young For Fear Of Retaliation
2014-04-18 14:50:57

Max Planck Institute If a restaurant owner fails to pay the protection money demanded of him, he can expect his premises to be trashed. Warnings like these are seldom required, however, as fear of the consequences is enough to make restaurant owners pay up. Similarly, mafia-like behavior is observed in parasitic birds, which lay their eggs in other birds’ nests. If the host birds throw the cuckoo’s egg out, the brood parasites take their revenge by destroying the entire nest....

Cheats Of The Bird World
2013-09-25 08:49:56

University of Exeter Cuckoo finches that lay more than one egg in their victims' nests have a better chance of bamboozling host parents into fostering their parasitic young, a study has found. Dr Martin Stevens from the University of Exeter and Dr Claire Spottiswoode from the University of Cambridge, with Dr Jolyon Troscianko at the University of Exeter, demonstrated that when African cuckoo finch females lay more than one egg in the same nest of their African tawny-flanked prinia...

Honeyguide Birds Destroy Their Own Species' Eggs To Eliminate Competition
2013-08-21 09:19:04

University of Cambridge Scientists believe behavior drives evolution of egg size similar to hosts Like cuckoos, honeyguides are parasitic birds that lay their eggs in other birds' nests and dupe them into raising their young. Now scientists reveal that, unlike in cuckoos, the resemblance between honeyguide eggs and those of their bee-eater bird hosts hasn't evolved to trick hosts into accepting the imposter egg as one of their own. Rather, it appears to have evolved to trick other...

2013-05-02 12:12:11

Birds that can't identify high quality male songs change male, female flock-mate behavior Female cowbirds incapable of recognizing high-quality male songs can alter the behavior of flock-mates of either sex and disrupt overall social structure, according to research published May 1 in the open access journal PLOS ONE by Sarah Maguire and colleagues from the University of Pennsylvania. Individual traits can impact a social network even in cowbirds, but the impact of changing individual...

Bees That Go 'Cuckoo' In Nests Of Other Bees
2012-08-31 12:08:39

5 new species of cuckoo bees from the Cape Verde Islands The biota of island archipelagos is of considerable interest to biologists. These isolated areas often act as 'evolutionary laboratories', spawning biological diversity rapidly and permitting many mechanisms to be observed and studied over relatively short periods of time. Such islands are often the places of new discoveries, including the documentation of new species. The Republic of Cape Verde comprises 10 inhabited islands...

2012-08-03 01:06:24

New research explains why female cuckoos have evolved different guises To minimize the chance of being recognized and thus attacked by the birds they are trying to parasitize, female cuckoos have evolved different guises. The new research, funded by the Natural Environment Research Council, was published today, 03 August, in the journal Science. The common cuckoo (Cuculus canorus) lays its eggs in the nests of other birds. On hatching, the young cuckoo ejects the host's eggs and chicks...

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2011-04-14 09:50:35

New research reveals how biological arms races between cuckoos and host birds can escalate into a competition between the host evolving new, unique egg patterns (or 'signatures') and the parasite new forgeries. Brood parasitic birds such as cuckoos lay eggs that mimic those of their hosts in an effort to trick them into accepting the alien egg and raising the cuckoo chick as one of their own. New research from the University of Cambridge has found that different bird species parasitized by...

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2011-03-08 09:50:12

By Leeann Bright, University of Florida A University of Florida study demonstrates extinction's ripple effect through the animal kingdom, including how the demise of large mammals 20,000 years ago led to the disappearance of one species of cowbird. The study shows the trickle-down effect the loss of large mammals has on other species, and researchers say it is a lesson from the past that should be remembered when making conservation, game and land-use decisions today. "There's nothing worse...

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2010-04-26 09:30:40

Eggs from other females can be found in every fifth nest Some female zebra finches foist a part of their eggs on their neighbors. Scientists of the Max Planck Institute for Ornithology in Seewiesen discovered that in every fifth nest there is one egg that is not produced by its social parents. The female birds act in a very well-targeted way: eggs are being placed in "foster-care" shortly before the hosts commence their own egg laying (online publication in Animal Behaviour, April 15, 2010)....


Latest Brood parasites Reference Libraries

0_3db5e3e19289c39d788e1f8e5aa0e839
2009-01-17 20:19:53

The Great Spotted Cuckoo (Clamator glandarius) is a species of Cuckoo that is widespread through southeast and southwest Europe and western Asia. It is migratory and winters in Africa. It prefers areas of warm open country with trees. The adult has a slender body. It has a gray upper body, long tail and strong legs. Its cap and wings are gray, face and upper breast is yellow, and underparts are white. Sexes are similar. Young have blackish upperparts and cap, and chestnut primary wing...

0_e6042fb08a79d3b711ac8489b3d287b7
2009-01-17 19:53:55

The Pied Cuckoo (Clamator jacobinus) also known as the Pied Crested Cuckoo or Jacobin Cuckoo, is a species of bird in the cuckoo family which includes roadrunners, anis, and the Hoatzin. It is found in Africa south of the Sahara Desert east to India, Sri Lanka and Burma. It is migratory, but only over short distances. The more northerly birds and those at higher altitudes leave for warmer and wetter areas in the winter. Its habitat is scrub, wetlands and cultivation. This is a large...

0_0b70d23eed023af0021ba74c346ea353
2009-01-17 16:24:39

The Asian Koel (Eudynamys scolopacea) or Common Koel, is a species of bird found in South Asia, China, and southeast Asia into Australia. It has several subspecies (most considered full species) that converge over a wide range. It is a member of the cuckoo order of Cuculiformes. The name koel means "nightingale" in India because of the Indian Koel's harmonious call. In eastern Australia the bird is commonly known as the Rainbird or Stormbird as its call is said to indicate coming rain....

38_b13626255981a37d52e3aeee6f22e26c
2008-05-05 22:54:50

The Black-whiskered Vireo (Vireo altiloquus), is a small passerine bird found in southern Florida, USA, and the West Indies as far south as the offshore islands of Venezuela. This bird is a partial migrant. Northern birds winter from the Greater Antilles to northern South America. It is a rare vagrant to Costa Rica. Its habitat is open deciduous wooded areas and cultivation, and in Florida also mangroves. The Black-whiskered Vireo is 5.5 to 6.0 inches in length and has a 9.8 inch wingspan....

0_cf8194b61b111db9ad3ef76d3f8fee65
2006-11-11 16:23:19

The Giant Cowbird, Molothrus oryzivorus, is a large perching bird of the family Icteridae. It breeds from southern Mexico south to northern Argentina, and on Trinidad and Tobago. It is found in open woodland and cultivated areas with large trees, but is also the only cowbird that is found in deep forest. The male Giant Cowbird is 14 inches long and weighs 6.35 ounces. The bird is shiny black with a long tail, long bill, small head and a neck ruff which is expanded in display. The female...

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Word of the Day
barratry
  • The offense of persistently instigating lawsuits, typically groundless ones.
  • An unlawful breach of duty on the part of a ship's master or crew resulting in injury to the ship's owner.
  • Sale or purchase of positions in church or state.
This word ultimately comes from the Old French word 'barater,' to cheat.
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