Results 91 to 100 of about 1,210,242 (209)
Glacial cycles promote greater dispersal, which can help explain larger clutch sizes, in north temperate birds [PDF]
, 2009 Earth’s glacial history and patterns in the life history traits of the planet’s avifauna suggest the following interpretations of how recent geological history has affected these key characteristics of the biota: 1) Increased colonizing ...
David W. Winkler +4 more
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Current Knowledge of Helminths of Wild Birds in Ecuador
BirdsParasitic helminths are diverse in wild birds globally, but knowledge about helminths in Ecuadorian avifauna is still fragmentary. In the present review, records about helminths (Platyhelminthes, Nematoda, and Acanthocephala) in Ecuadorian wild birds is ...
Patricio D. Carrera-Játiva +1 more
doaj +1 more source
Zebra Finch Females Avoided the Scent of Males with Greater Body Condition
BirdsThe role of chemical communication in the social relationships of birds is receiving growing attention, but our knowledge is still scarce compared to that of other taxa. Previous evidence suggests that chemical cues emitted by birds may carry information
Luisa Amo, Isabel López-Rull
doaj +1 more source
Between Sheds Migration: establish whether, and if they do how far birds migrate between field sheds on the Sheepdrove Organic Farm silvo-poultry production system [PDF]
, 2004 Sheepdrove Organic Farm was concerned about the possibility of birds of different ages mixing within their silvo-poultry system resulting in variation in the bird weights at depletion. A trial was established to investigate whether birds did migrate and
Pearce, Bruce, Pegg, Vanessa
core
The Fast Wandering of Slow Birds
, 2011 I study a single "slow" bird moving with a flock of birds of a different, and faster (or slower) species. I find that every "species" of flocker has a characteristic speed $\gamma\ne v_0$, where $v_0$ is the mean speed of the flock, such that, if the ...
A. Huth +3 more
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Identification of Novel Can Manipulation Behaviour in the Common Raven (Corvus corax)
BirdsThis study examines the common raven (Corvus corax) population on Lanzarote, Spain, at a previously unstudied site. The study aimed to compare the use of camera trap technology and human observation in capturing a wide repertoire of raven behaviour and ...
Rebecca Dickinson, Loni Loftus
doaj +1 more source
, 2010 Caltech-UCSD Birds 200 (CUB-200) is a challenging image dataset annotated with 200 bird species. It was created to enable the study of subordinate categorization, which is not possible with other popular datasets that focus on basic level categories ...
Belongie, Serge +6 more
core +1 more source
Bird Species Knowledge and Its Antecedents in US High School Students—A Case Study from Michigan
BirdsBird identification is a necessary skill for citizen science projects, and teaching and learning about species is essential to halt the decline in biodiversity. Here, we investigated bird species knowledge in a case study of Michigan high school students
Robin Egger +2 more
doaj +1 more source
Organic broilers in floorless pens on pasture [PDF]
, 2005 This thesis investigates different aspects of rearing broilers organically in floorless pens on pasture. The birds and pens were moved daily to fresh pasture.
Bassler, Arnd
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