Results 41 to 50 of about 2,314 (199)

A Review of Flight-Initiation Distances and their Application to Managing Disturbance to Australian Birds [PDF]

open access: yes, 2012
Disturbance – the response of birds to a stimulus such as the presence of a person – is considered a conservation threat for some Australian birds. The distance at which a bird flees from perceived danger is defined as the flight-initiation distance (FID)
Australian Biosecurity CRC   +37 more
core   +1 more source

First karyotypical description of two American Ciconiiform birds, Mycteria americana (Ciconiidae) and Platalea ajaja (Threskiornithidae) and its significance for the chromosome evolutionary and biological conservation approaches

open access: yesGenetics and Molecular Biology, 2000
The karyotypes of Mycteria americana (Ciconiidae) and Platalea ajaja (Threskiornithidae) are described. Both species have a diploid number of 2n = 72.
Mercival Roberto Francisco   +1 more
doaj   +1 more source

Avian diversity and their status in and around Bhindawas bird sanctuary, Haryana (India) [PDF]

open access: yes, 2017
One year survey conducted in and around Bhindawas bird sanctuary in district Jhajjar, Haryana (India) from January, 2015 to December, 2015; revealed a total of 104 bird species belonging to 15 orders and 39 families.
Chopra, Girish   +2 more
core   +2 more sources

Veinte años de ausencia: avistamientos recientes de la espátula rosada (Platalea ajaja) en la Bahía de la Paz, Baja California Sur, México

open access: yesHuitzil, 2013
La espátula rosada (Platalea ajaja) es una visitante sumamente rara en la Península de Baja California, pero aún más en la zona de Bahía de La Paz, Baja California Sur. Para algunos autores, esta ave es considerada como una visitante esporádica de verano
Israel Guerrero-Cárdenas   +4 more
doaj   +1 more source

White-headed Vultures Trigonoceps occipitalis show visual field characteristics of hunting raptors [PDF]

open access: yes, 2017
The visual fields of Aegypiinae vultures have been shown to be adapted primarily to meet two key perceptual challenges of their obligate carrion-feeding behaviour: scanning the ground and preventing the sun’s image falling upon the retina.
Fowler   +17 more
core   +2 more sources

Helmintos gastrointestinales en aves acuáticas de la subcuenca alta del río Lerma, México

open access: yesRevista Mexicana de Biodiversidad, 2012
Se realizó un inventario y se calcularon los parámetros de infección de los helmintos gastrointestinales de 36 ejemplares de aves acuáticas pertenecientes a las familias Anatidae, Rallidae y Threskiornithidae, procedentes de la subcuenca alta del río ...
Marcela Martínez-Haro   +3 more
doaj   +1 more source

The visual fields of common guillemots Uria aalge and Atlantic puffins Fratercula arctica: foraging, vigilance and collision vulnerability [PDF]

open access: yes, 2015
Significant differences in avian visual fields are found between closely related species that differ in their foraging technique. We report marked differences in the visual fields of two auk species.
Bradstreet   +31 more
core   +2 more sources

Aberrant coloration in waterbirds from the Lake of Zumpango, State of México

open access: yesHuitzil, 2018
Reportamos la presencia de cuatro especies de aves acuáticas con leucismo parcial en la Laguna de Zumpango, Estado de México. Los individuos que observamos, de coloración aberrante, fueron los siguientes: un polluelo recién eclosionado del ibis cara ...
Araceli Janette Rodríguez-Casanova   +1 more
doaj   +1 more source

Genetic diversity and structure in the Sado captive population of the Japanese crested ibis. [PDF]

open access: yes, 2013
The Japanese crested ibis Nipponia nippon is a critically threatened bird. We assessed genetic diversity and structure in the Sado captive population of the Japanese crested ibis based on 24 and 50 microsatellite markers developed respectively for the ...
Homma, Kosuke   +9 more
core   +1 more source

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