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All posts; Tags Include "Ornithology"

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  • May 3, 2017
  • 05:30 PM
  • 166 views

Gimme Your Lunch Money!: Feeding Behaviors in Hummingbirds

by Melissa Chernick in Science Storiented

Ubatuba, São Paulo, Brazil; 9 October 2014 © Almir Cândido de AlmeidaI just put out my hummingbird feeder this season. It didn’t take those little guys long to find it either. Now I’ve got their cute little bodies whizzing about all over the place. They need Yackety Sax to play as their soundtrack. But it got me to thinking about hummingbirds and to looking through recent papers for a good study. I came across one in Zoologia about the feeding behavior of hummingbirds in artificial f........ Read more »

  • August 19, 2015
  • 01:09 PM
  • 731 views

The Mechanics of a Hummingbird’s tongue

by Bernadeta Dadonaite in The Question Gene

How the tongue of a hummingbird is a perfect example of form fits function... Read more »

Rico-Guevara, A., & Rubega, M. (2011) The hummingbird tongue is a fluid trap, not a capillary tube. Proceedings of the National Academy of Sciences, 108(23), 9356-9360. DOI: 10.1073/pnas.1016944108  

  • July 15, 2015
  • 03:03 PM
  • 1,090 views

Journal Club: Starlings on Prozac: How pharmaceuticals may affect wildlife

by GrrlScientist in Maniraptora

SUMMARY: Recent research suggests that the commonly prescribed psychiatric drug, Prozac, occurs at environmentally relevant concentrations that can significantly alter behaviour and physiology in wild birds .. Read more... Read more »

Bean, T., Boxall, A., Lane, J., Herborn, K., Pietravalle, S., & Arnold, K. (2014) Behavioural and physiological responses of birds to environmentally relevant concentrations of an antidepressant. Philosophical Transactions of the Royal Society B: Biological Sciences, 369(1656), 20130575-20130575. DOI: 10.1098/rstb.2013.0575  

Crockett, M., Siegel, J., Kurth-Nelson, Z., Ousdal, O., Story, G., Frieband, C., Grosse-Rueskamp, J., Dayan, P., & Dolan, R. (2015) Dissociable Effects of Serotonin and Dopamine on the Valuation of Harm in Moral Decision Making. Current Biology, 25(14), 1852-1859. DOI: 10.1016/j.cub.2015.05.021  

Markman, S., Müller, C., Pascoe, D., Dawson, A., & Buchanan, K. (2011) Pollutants affect development in nestling starlings Sturnus vulgaris. Journal of Applied Ecology, 48(2), 391-397. DOI: 10.1111/j.1365-2664.2010.01931.x  

  • May 5, 2015
  • 08:55 AM
  • 912 views

Journal Club: Birdfeeding favours non-native bird species

by GrrlScientist in Maniraptora

SUMMARY: Feeding wild birds on bread and seed encourages high densities of introduced bird species at the expense of native species, thereby altering urban bird communities, according to a new study... Read more »

  • May 5, 2015
  • 08:44 AM
  • 1,056 views

Journal Club: Birdfeeding favours non-native bird species

by GrrlScientist in The Invisible Scientist

SUMMARY: Feeding wild birds on bread and seed encourages high densities of introduced bird species at the expense of native species, thereby altering urban bird communities, according to a new study... Read more »

  • October 10, 2014
  • 11:26 PM
  • 1,281 views

The red of bearded vultures—allure or cure?

by Yao-Hua Law in TORCH

[This story first appeared on Earth Touch News] Soaring high among the mountains from Europe to China and to Africa, the bearded vulture (Gypaetus barbatus) commands attention at any lunch party. It likes to gate crash into the frenzy around carrion, pushing other scavengers aside with wings that could stretch the height of Michael Jordan, […]... Read more »

  • August 14, 2014
  • 09:30 AM
  • 1,683 views

Competition for ecological niches limits evolution of new species | @GrrlScientist

by GrrlScientist in GrrlScientist

A recently published study finds that competition for ecological niches limits the evolution of new species. Further, this study finds that speciation rate slows or even stops as available ecological niches fill up. Continue reading...... Read more »

Price Trevor D., Hooper Daniel M., Buchanan Caitlyn D., Johansson Ulf S., Tietze D. Thomas, Alström Per, Olsson Urban, Ghosh-Harihar Mousumi, Ishtiaq Farah, & Gupta Sandeep K. (2014) Niche filling slows the diversification of Himalayan songbirds. Nature. DOI: 10.1038/nature13272  

Kennedy Jonathan D., Weir Jason T., Hooper Daniel M. , Tietze D. Thomas, Martens Jochen, & Price Trevor D. (2012) Ecological limits on diversification of the Himalayan core Corvoidea. Evolution, 66(8), 2599-2613. DOI: 10.1111/j.1558-5646.2012.01618.x  

Harmon Luke J., Schulte James A., Larson Allan, & Losos Jonathan B. (2003) Tempo and Mode of Evolutionary Radiation in Iguanian Lizards. Science, 301(5635), 961-964. DOI: 10.1126/science.1084786  

  • August 6, 2014
  • 08:15 AM
  • 1,302 views

Fall Leaves And Orange Flamingos

by Mark Lasbury in As Many Exceptions As Rules

Flamingos are pink because of their diet, but greater and lesser flamingos eat different things – and neither food is pink. The spirulina food of the lesser flamingo is a cyanobacterium called Arthospira fusiformis. Unforunately, there have been large die offs in lesser flamingos. Recent research has shown that this may be due to toxic alga blooms and production of toxins even by A. fusiformis. In addition, a newer study has shown that a bacteriophage is responsible for large die offs of A........ Read more »

Anderson MJ, & Williams SA. (2010) Why do flamingos stand on one leg?. Zoo biology, 29(3), 365-74. PMID: 19637281  

Peduzzi P, Gruber M, Gruber M, Schagerl M. (2014) The virus's tooth: cyanophages affect an African flamingo population in a bottom-up cascade. ISME J. , 8(6), 1346-1351. info:/

  • June 20, 2014
  • 07:31 AM
  • 1,368 views

Journal Club: Passenger pigeon extinction: it’s complicated

by GrrlScientist in Maniraptora

A newly published study reveals that the extinction of the passenger pigeon likely was due to the combined effects of their natural dramatic population fluctuations and human over-exploitation. Read more... Read more »

Hung Chih-Ming, Shaner Pei-Jen L., Zink Robert M., Liu Wei-Chung, Chu Te-Chin, Huang Wen-San, & Li Shou-Hsien. (2014) Drastic population fluctuations explain the rapid extinction of the passenger pigeon. Proceedings of the National Academy of Sciences. DOI: 10.1073/pnas.1401526111  

Groenen Martien A. M., Archibald Alan L., Uenishi Hirohide, Tuggle Christopher K., Takeuchi Yasuhiro, Rothschild Max F., Rogel-Gaillard Claire, Park Chankyu, Milan Denis, & Megens Hendrik-Jan. (2012) Analyses of pig genomes provide insight into porcine demography and evolution. Nature, 491(7424), 393-398. DOI: 10.1038/nature11622  

  • June 16, 2014
  • 03:26 PM
  • 1,507 views

Passenger pigeon extinction: it's complicated | @GrrlScientist

by GrrlScientist in GrrlScientist

A newly published study reveals that the extinction of the passenger pigeon likely was due to the combined effects of their natural dramatic population fluctuations and human over-exploitation.... Read more »

Hung Chih-Ming, Shaner Pei-Jen L., Zink Robert M., Liu Wei-Chung, Chu Te-Chin, Huang Wen-San, & Li Shou-Hsien. (2014) Drastic population fluctuations explain the rapid extinction of the passenger pigeon. Proceedings of the National Academy of Sciences. DOI: 10.1073/pnas.1401526111  

Groenen Martien A. M., Archibald Alan L., Uenishi Hirohide, Tuggle Christopher K., Takeuchi Yasuhiro, Rothschild Max F., Rogel-Gaillard Claire, Park Chankyu, Milan Denis, & Megens Hendrik-Jan. (2012) Analyses of pig genomes provide insight into porcine demography and evolution. Nature, 491(7424), 393-398. DOI: 10.1038/nature11622  

  • May 2, 2014
  • 06:12 AM
  • 1,459 views

Journal Club: Hummingbirds: still evolving endless forms most wonderful

by GrrlScientist in Maniraptora

SUMMARY: A new study finds that the rising Andes are tied to the rapid speciation of hummingbirds. This study also predicts that hummingbirds will evolve twice as many species as what we see today. ... Read more »

McGuire Jimmy A. , Witt Christopher C. , Remsen, Jr. J.V. , Corl Ammon , Rabosky Daniel L. , Altshuler Douglas L. , & Dudley Robert . (2014) Molecular Phylogenetics and the Diversification of Hummingbirds. Current Biology. DOI: http://dx.doi.org/10.1016/j.cub.2014.03.016  

Hoorn C., Wesselingh F. P., ter Steege H., Bermudez M. A., Mora A., Sevink J., Sanmartin I., Sanchez-Meseguer A., Anderson C. L., & Figueiredo J. P. (2010) Amazonia Through Time: Andean Uplift, Climate Change, Landscape Evolution, and Biodiversity. Science, 330(6006), 927-931. DOI: 10.1126/science.1194585  

Doorn G. S. v., Noest A. J., & Hogeweg P. (1998) Sympatric speciation and extinction driven by environment dependent sexual selection. Proceedings of the Royal Society B: Biological Sciences, 265(1408), 1915-1919. DOI: 10.1098/rspb.1998.0520  

  • April 16, 2014
  • 09:17 AM
  • 1,194 views

Journal Club: What’s old is new again: newly discovered songbird family is ancient

by GrrlScientist in Maniraptora

SUMMARY: Scientists analysing songbird DNA discovered that the spotted wren-babbler is neither a wren nor a wren-babbler, nor even a babbler. Instead, it represents an old evolutionary family that has no close living relatives. ... Read more »

Alström Per, Hooper Daniel M. , Liu Yang, Olsson Urban, Mohan Dhananjai , Gelang Magnus , Hung Le Manh, Zhao Jian , Lei Fumin, & Price Trevor D. (2014) Discovery of a relict lineage and monotypic family of passerine birds. Biology Letters, 10(3). DOI: 10.1098/rsbl.2013.1067  

  • April 9, 2014
  • 11:18 AM
  • 1,674 views

Telomere length: a new measure of chronic stress in wildlife? | @GrrlScientist

by GrrlScientist in GrrlScientist

Telomeres, the DNA-protein caps that prevent chromosomal fraying, are positively affected by social stress, according to two independent studies that were just published within days of each other. One study -- which has received widespread media coverage -- found a positive relationship between social environment and telomere length in children, adding support to previous work in people. A second study -- which few have heard about -- found that accelerated telomere erosion is associated with so........ Read more »

Shalev Idan, Entringer Sonja, Wadhwa Pathik D., Wolkowitz Owen M., Puterman Eli, Lin Jue, & Epel Elissa S. (2013) Stress and telomere biology: A lifespan perspective. Psychoneuroendocrinology, 38(9), 1835-1842. DOI: 10.1016/j.psyneuen.2013.03.010  

  • April 7, 2014
  • 08:53 AM
  • 1,386 views

Hummingbirds: still evolving endless forms most wonderful | @GrrlScientist

by GrrlScientist in GrrlScientist

A new study finds that the rising Andes is tied to the rapid speciation of hummingbirds. This study also predicts that hummingbirds will evolve twice as many species as what we see today.... Read more »

McGuire Jimmy A. , Witt Christopher C. , Remsen, Jr. J.V. , Corl Ammon , Rabosky Daniel L. , Altshuler Douglas L. , & Dudley Robert . (2014) Molecular Phylogenetics and the Diversification of Hummingbirds. Current Biology. DOI: http://dx.doi.org/10.1016/j.cub.2014.03.016  

Hoorn C., Wesselingh F. P., ter Steege H., Bermudez M. A., Mora A., Sevink J., Sanmartin I., Sanchez-Meseguer A., Anderson C. L., & Figueiredo J. P. (2010) Amazonia Through Time: Andean Uplift, Climate Change, Landscape Evolution, and Biodiversity. Science, 330(6006), 927-931. DOI: 10.1126/science.1194585  

Doorn G. S. v., Noest A. J., & Hogeweg P. (1998) Sympatric speciation and extinction driven by environment dependent sexual selection. Proceedings of the Royal Society B: Biological Sciences, 265(1408), 1915-1919. DOI: 10.1098/rspb.1998.0520  

  • March 6, 2014
  • 07:37 AM
  • 1,221 views

What's old is new again: newly discovered songbird family is ancient | @GrrlScientist

by GrrlScientist in GrrlScientist

Scientists analysing songbird DNA discovered that the spotted wren-babbler is neither a wren nor a wren-babbler, nor even a babbler. Instead, it represents an old evolutionary family that has no close living relatives. ... Read more »

Alström Per, Hooper Daniel M. , Liu Yang, Olsson Urban, Mohan Dhananjai , Gelang Magnus , Hung Le Manh, Zhao Jian , Lei Fumin, & Price Trevor D. (2014) Discovery of a relict lineage and monotypic family of passerine birds. Biology Letters, 10(3). DOI: 10.1098/rsbl.2013.1067  

  • October 9, 2012
  • 03:00 AM
  • 2,004 views

One-eyed wooing: beauty is in the right eye of the beholder for finches | @GrrlScientist

by GrrlScientist in GrrlScientist

GrrlScientist: a newly published study shows that beauty is in the right eye of the beholder for birds, providing the first demonstration in any animal of visual lateralization of mate choice... Read more »

Jennifer J. Templeton, D. James Mountjoy, Sarah R. Pryke, & Simon C. Griffith. (2012) In the eye of the beholder: visual mate choice lateralization in a polymorphic songbird. Biology Letters. info:/10.1098/rsbl.2012.0830

L. Workman, & R.J. Andrew. (1986) Asymmetries of eye use in birds. Animal Behaviour, 34(5), 1582-1584. info:/10.1016/S0003-3472(86)80235-4

Orsola Rosa Salva, Lucia Regolin, Elena Mascalzoni, & Giorgio Vallortigara. (2012) Cerebral and behavioural asymmetries in animal social recognition. Comparative Cognition , 110-138. info:/10.3819/ccbr.2012.70006

  • September 22, 2012
  • 05:00 AM
  • 1,664 views

Wild parrots name their babies | video | @GrrlScientist

by GrrlScientist in GrrlScientist

Wild green-rumped parrotlet parents give their babies their own individual names... Read more »

Karl S. Berg, Soraya Delgado, Kathryn A. Cortopassi, Steven R. Beissinger, & Jack W. Bradbury. (2011) Vertical transmission of learned signatures in a wild parrot. Proceedings of the Royal Society B: Biological Sciences. info:/10.1098/rspb.2011.0932

Ralf Wanker, Jasmin Apcin, Bert Jennerjahn, & Birte Waibel. (1998) Discrimination of different social companions in spectacled parrotlets (Forpus conspicillatus): evidence for individual vocal recognition. . Behavioral Ecology and Sociobiology , 43(3), 197-202. info:/10.1007/s002650050481)

  • September 19, 2012
  • 04:00 AM
  • 2,283 views

Extinct Carolina parakeet provides glimpse into evolution of American parrots | @GrrlScientist

by GrrlScientist in GrrlScientist

DNA obtained for the first time from extinct Carolina parakeets reveals their closest relatives and provides insight into the evolution of New World parrots... Read more »

Jeremy J. Kirchman, Erin E. Schirtzinger, & Timothy F. Wright. (2012) Phylogenetic relationships of the extinct Carolina Parakeet (Conuropsis carolinensis) inferred from DNA sequence Data. The Auk, 129(2), 197-204. info:/10.1525/auk.2012.11259

Manuel Schweizer, Ole Seehausen, & Stefan T. Hertwig. (2011) Macroevolutionary patterns in the diversification of parrots: Effects of climate change, geological events and key innovations. Journal of Biogeography, 38(11), 2176-2194. info:/10.1111/j.1365-2699.2011.02555.x

  • August 24, 2012
  • 04:00 AM
  • 2,301 views

Two new owl species discovered in Philippines | @GrrlScientist

by GrrlScientist in GrrlScientist

Two new owl species were discovered in the Philippine Islands and five more Philippine owls were given full species status... Read more »

P. C. Rasmussen, D. N. S. Allen, N. J. Collar, B. De Meulemeester, R. O. Hutchinson, P. G. C. Jakosalem, R. S. Kennedy, F. R. Lambert, & L. M. Paguntalan. (2012) Vocal divergence and new species in the Philippine Hawk Owl Ninox philippensis complex. Forktail, 1-20. info:/

  • August 22, 2012
  • 04:30 AM
  • 1,673 views

Unraveling the life history traits of successful invaders | @GrrlScientist

by GrrlScientist in GrrlScientist

Species at the opposite ends of the life span-brood value spectrum will be most likely to survive climate change... Read more »

Daniel Sol, Joan Maspons, Miquel Vall-llosera, Ignasi Bartomeus, Gabriel E. García-Peña, Josep Piñol, & Robert P. Freckleton. (2012) Unraveling the Life History of Successful Invaders . Science, 580-583. info:/

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