Results 41 to 50 of about 100,997 (180)

Non-leucistic aberrations in the plumage of birds from Nayarit, Mexico

open access: yesHuitzil, 2018
Abnormalities in the plumage are caused by multiple environmental and genetic factors. Plumage aberrations have been reported in Mexico, but all have been classified as leucistic (white color due to a recessive gene).
David Molina   +6 more
doaj   +1 more source

Seroepidemiologic Survey of Potential Pathogens in Obligate and Facultative Scavenging Avian Species in California. [PDF]

open access: yesPLoS ONE, 2015
Throughout the world, populations of scavenger birds are declining rapidly with some populations already on the brink of extinction. Much of the current research into the factors contributing to these declines has focused on exposure to drug residues ...
Mary H Straub   +6 more
doaj   +1 more source

Vultures in the southeastern United States ingest more plastic in landscapes with more developed landcover

open access: yesFrontiers in Ecology and Evolution, 2023
IntroductionPlastics are found in ecosystems worldwide and can have widespread impacts on organisms and the environment. Cathartid vultures, including the black vulture (Coragyps atratus) and the turkey vulture (Cathartes aura), have adapted to urbanized
Hannah C. Partridge   +4 more
doaj   +1 more source

Volatile Compounds in Feathers of the Scarlet Macaw (Ara macao) Reflect Sex and Pair‐Bond Status

open access: yesIntegrative Zoology, EarlyView.
Scarlet macaws exhibit sex‐ and pair‐related differences in plumage volatile composition, with males showing greater chemical richness. Partnered individuals differ in specific compound classes, whereas no clear association with immune function was detected. These results support a potential role for olfactory cues in sexual and social communication in
Elisa Espartosa   +3 more
wiley   +1 more source

Tongue and Glottis Morphology of Cathartes aura and the Secret of Its Functional Adaptation

open access: yesActa Zoologica, EarlyView.
ABSTRACT Cathartes aura, commonly known as the Turkey vulture, is a scavenger bird belonging to the family Cathartidae that is widely distributed throughout the Americas and classified as a New World vulture. Its diet primarily consists of small‐sized carcasses, predominantly of wild animals.
Jean Caio Figueiredo de Almeida   +5 more
wiley   +1 more source

Avaliação da predação de Podocnemis expansa e Podocnemis unifilis (Testudines, Podocnemididae) no rio Javaés, Tocantins Evaluation of predation in Podocnemis expansa and Podocnemis unifilis (Testudines, Podocnemididae) in the Javaés River, Tocantins

open access: yesActa Amazonica, 2009
Podocnemis expansa e P. unifilis são animais de vida longa, com uma demorada maturação sexual, o que influencia uma baixa taxa de substituição de indivíduos.
Giovanni Salera Junior   +2 more
doaj   +1 more source

Navigating Storms: Examining Vultures’ Behavior in Response to Extreme Weather Events

open access: yesDiversity, 2023
Extreme weather events such as hurricanes and tornadoes have been found to change the spatial and temporal abundance of raptors by decreasing survival and forcing the emigration of individuals, or by increasing habitat heterogeneity and facilitating ...
Adrián Naveda-Rodríguez, Scott A. Rush
doaj   +1 more source

Diversidad de aves rapaces diurnas en la Reserva de la Biosfera Selva El Ocote, Chiapas, México

open access: yesRevista Mexicana de Biodiversidad, 2009
LA PÉRDIDA Y DEGRADACIÓN DE AMBIENTES NATURALES ESTÁ AFECTANDO A GRUPOS FUNCIONALES DE GRAN RELEVANCIA, COMO LAS AVES RAPACES DIURNAS. EN ESTE ESTUDIO EVALUAMOS LA VARIACIÓN ESPACIAL DE LA DIVERSIDAD DE ESTE GRUPO EN LA ZONA NÚCLEO Y DE AMORTIGUAMIENTO ...
JOSÉ LUIS RANGEL   +2 more
doaj   +1 more source

Underestimation of avian diversity in the Tumbesian hotspot: Sampling gaps and conservation challenges

open access: yesConservation Science and Practice, EarlyView.
This study provides the first comprehensive reassessment of avian diversity in the Tumbesian region in over 30 years, documenting 931 species and identifying significant sampling gaps driven by geographic accessibility. We reveal a critical misalignment between biodiversity value and current protection coverage, particularly in humid forests which ...
Anabel Cueva‐Agila   +3 more
wiley   +1 more source

Inventory of wildlife use of mortality pits as feeding sites: implications of pathogen exposure

open access: yesHuman-Wildlife Interactions, 2017
To better understand the use of mortality pits by wildlife and possible pathogen dissemination from the resulting wildlife contact in these areas, we used 8 camera traps on 4 mortality pits in Colorado from June to December 2014 to create a species ...
Jeremy W. Ellis   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy