Navigation Links
How birds spot the cuckoo in the nest
Date:7/15/2008

ally indistinguishable from the nesting parents' own eggs and were accepted as belonging to the brood. However, it was a different matter for the birds sitting on UV-block-coated impostors. Seventeen brooding parents evicted the strange looking egg, pecking at the shell until they had made a large enough hole to stick their beak in and carry it away. Only 11 blackcaps accepted the interloper with its altered appearance.

The UV appearance of the eggs was very important in enabling the blackcaps to recognise the new eggs as impostors. The blackcaps rejected far more eggs when Polačikov and Honza covered them in UV block. By altering the eggs' UV reflectivity the team had made them stand out from the crowd.

Honza admits that he was surprised that the UV reflectivity had such a significant effect on the blackcap's ability to reject an impostor. Having found that an interloper's UV appearance is key to its acceptance in a clutch, Honza is keen to see whether cuckoos try to outsmart their victims by choosing clutches that closely match their own eggs' UV reflectivity.


'/>"/>

Contact: Kathryn Phillips
kathryn@biologists.com
44-122-342-5525
The Company of Biologists
Source:Eurekalert

Page: 1 2

Related biology news :

1. Birds migrate together at night in dispersed flocks, new study indicates
2. Want to fly? Dont copy the birds and the bees
3. Killer whales, blind bats, discriminating dolphins, mating birds
4. Migrating songbirds learn survival tips on the fly
5. Birds migrate earlier, but some may be left behind as the climate warms rapidly
6. Bee species outnumber mammals and birds combined
7. Genetic sequencing of protein from T. rex bone confirms dinosaurs link to birds
8. Asian waterbirds stage remarkable comeback
9. Some migratory birds cant find success in urban areas, study finds
10. Birds, bats and insects hold secrets for aerospace engineers
11. High degree of resistance to antibiotics in Arctic birds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/29/2014)... of kidney cancer patients in Europe sheds light on ... an apparent link between exposure to aristolochic acid and ... research, by an international team led by scientists from ... Montreal, underscores the importance of investigating possible sources of ... of the Aristolochia genus, also has been suspected of ...
(Date:10/28/2014)... German . , ... food when times are lean? By studying wild chimpanzees ... of the Max Planck Institute for Evolutionary Anthropology in ... apes can acquire extra energy needed to maintain large, ... nests more en route to breakfast sites containing fruits ...
(Date:10/28/2014)... of Health (NIH) announced awards to expand the ... National Center for Advancing Translational Sciences (ORDR-NCATS) collaborative ... the network, physician scientists at 22 consortia will ... clinical research and investigate new treatments for patients ... by $29 million in fiscal 2014 funding from ...
Breaking Biology News(10 mins):Study sheds light on genetic architecture of kidney cancer 2Study sheds light on genetic architecture of kidney cancer 3The early chimp gets the fig 2The early chimp gets the fig 3NIH's ORDR-NCATS RDCRN & NICHD awards U54 cooperative agreement for natural history study 2NIH's ORDR-NCATS RDCRN & NICHD awards U54 cooperative agreement for natural history study 3
... IN Traditional turfgrass management programs rely heavily ... In response to increased public scrutiny and legislation, ... but research indicates that these alternatives have not ... lawn care industry. Results of a new study ...
... as the great pandemia of the XXI century. Recent data ... suffering from overweight, of which 300 million are clinically obese. ... worrying increase, with more than 155 million children and adolescents ... Biologist Aline Jelenkovic analysed to what point corporal morphology was ...
... QUEBEC, CANADA A study in HortTechnology ... reducing solar heat radiation and temperatures during the hot ... Canadian researchers, was the first investigation into the effects ... shading method. Results showed that the technology improved greenhouse ...
Cached Biology News:Turfgrass fertility, pesticide programs compared 2The amount of adipose tissue should be taken into account in the fight against obesity 2The amount of adipose tissue should be taken into account in the fight against obesity 3New technology improves greenhouse, plant microclimates 2
(Date:10/27/2014)... 27, 2014 The new research ... (High & Medium), Sub-type (Primary & Secondary), and ... & Transportation & Power Generation) - Trends and ... market with analysis and forecasting of the market ... Tables with 52 Figures spread through 146 Pages ...
(Date:10/27/2014)... TORONTO , Oct. 27, 2014 ... (OTCQB: GNBT) today announced two presentations demonstrating that ... its novel proprietary cancer immunotherapeutic AE37 vaccine correlated ... patients. The AE37 cancer vaccine is being developed ... ( www.antigenexpress.com ). The presentations are being made ...
(Date:10/27/2014)... 27, 2014 The “Molecular Diagnostic ... Microbiology), Technology (PCR, INAAT, DNA Sequencing), End User ... Software) - Global Forecast to 2018” provides a ... opportunities, current market trends, and strategies impacting the ... and forecasts of the revenue and share analysis. ...
(Date:10/27/2014)... 27, 2014 Called the NOAH ... eliminating several types of pediatric brain cancer. The ... in over 30 years of research and development. ... proves that one mom's determination can make a ... Halloween trick-or-treating, and it’s only fitting that we’ve ...
Breaking Biology Technology:Gas Insulated Switchgear Market worth $21,951.9 Million by 2019 - New Report by MarketsandMarkets 2Gas Insulated Switchgear Market worth $21,951.9 Million by 2019 - New Report by MarketsandMarkets 3Gas Insulated Switchgear Market worth $21,951.9 Million by 2019 - New Report by MarketsandMarkets 4Generex Announces Presentations Correlating Immunological Response with Reduced Recurrence in Phase II Study of AE37 Breast Cancer Vaccine in Patients at the American College of Surgeons 2Generex Announces Presentations Correlating Immunological Response with Reduced Recurrence in Phase II Study of AE37 Breast Cancer Vaccine in Patients at the American College of Surgeons 3Generex Announces Presentations Correlating Immunological Response with Reduced Recurrence in Phase II Study of AE37 Breast Cancer Vaccine in Patients at the American College of Surgeons 4Global Molecular Diagnostics Market Will Reach $7.9 Billion by 2018 - New Research Report by MarketsandMarkets 2Global Molecular Diagnostics Market Will Reach $7.9 Billion by 2018 - New Research Report by MarketsandMarkets 3Global Molecular Diagnostics Market Will Reach $7.9 Billion by 2018 - New Research Report by MarketsandMarkets 4Global Molecular Diagnostics Market Will Reach $7.9 Billion by 2018 - New Research Report by MarketsandMarkets 5FDA Approves Breakthrough in Pediatric Brain Cancer - First in 30 Years 2FDA Approves Breakthrough in Pediatric Brain Cancer - First in 30 Years 3
... Calif., Feb. 17 Avantis Medical Systems, Inc., a ... announced today that it has received a new 510(k) ... the claim for increased detection of cancerous and pre-cancerous ... technology that has been cleared by the FDA to ...
... as Senior Scientist , BURLINGTON, Mass., ... expansion of its executive team with the appointment ... The company also announced the addition of Richard ... )The appointments reflect the evolution of the company,s ...
... LIMMERICK, Ireland, Feb. 16 Copan Innovation Ltd., whose ... collection and transport systems in the world, has named ... Development in the Pacific Rim, as well as appointed ... Innovation Ltd. Bob Cooper, who brings a background of ...
Cached Biology Technology:Avantis Medical Systems Announces FDA 510(k) Clearance for the Third Eye(R) Retroscope(R) for Improved Polyp Detection in the Colon 2Avantis Medical Systems Announces FDA 510(k) Clearance for the Third Eye(R) Retroscope(R) for Improved Polyp Detection in the Colon 3Avantis Medical Systems Announces FDA 510(k) Clearance for the Third Eye(R) Retroscope(R) for Improved Polyp Detection in the Colon 4CorNova(R) Expands Management Team with Appointment of Robert Gallahue as Chief Financial Officer 2Copan Announces the Appointment of Bob Cooper as Vice President of Business Development in the Pacific Rim 2
FluoSpheres® biotin-labeled microspheres, 1.0 µm, yellow-green fluorescent (505/515) *1% solids*...
chk 1 kinase...
muscle actin (HUC1-1)...
... Neural Stem Cell Functional Identification Kit ... can be used for the short-term ... and the induction of NSCs into ... antibody panel consisting of mouse anti-human ...
Biology Products: