Results 21 to 30 of about 10,666 (198)
First record of Psittacara erythrogenys (Psittacidae) in Colombia
Caldasia, 2020 The red-masked parakeet Psittacara erythrogenys was originally distributed in the forests of Ecuador and northwestern Peru, mainly below 1500 m of elevation.
Eliana Fierro-Calderón +1 more
doaj +1 more source
A critique of avian CHD-based molecular sexing protocols illustrated by a Z-chromosome polymorphism detected in auklets [PDF]
, 2001 The sexes of non-ratite birds can be determined routinely by PCR amplification of the CHD-Z and CHD-W genes. CHD -based molecular sexing of four species of auklets revealed the presence of a polymorphism in the Z chromosome.
Burke, T. +5 more
core +1 more source
A computer vision approach to classification of birds in flight from video sequences [PDF]
, 2015 Bird populations are an important bio-indicator; so collecting reliable data is useful for ecologists helping conserve and manage fragile ecosystems. However, existing manual monitoring methods are labour-intensive, time-consuming, and error-prone.
Appiah, K +4 more
core +1 more source
Sex Determination in Male and Female Melopsittacus undulates using a Morphometric Method
Biosaintifika: Journal of Biology & Biology Education, 2018 Parakeets (Melopsittacus undulates) are classified parrot order Psittaciformes. Parakeets are monomorphic birds whose sex is difficult to be distinguished.
Ibnu Baehaqi +2 more
doaj +1 more source
Open Biology, 2021 In cryo-electron tomography (cryo-ET) of biological samples, the quality of tomographic reconstructions can vary depending on the transmission electron microscope (TEM) instrument and data acquisition parameters.
James M. Parkhurst +8 more
doaj +1 more source
An unusual presentation of a case of human psittacosis [PDF]
, 2018 Background: Chlamydia psittaci is a gram-negative, obligate intracellular organism. Birds are the main reservoir, but also non-avian domestic animals and humans can be infected.
Boelens, Jerina +7 more
core +3 more sources
Nest niche overlap among the endangered Vinaceous-breasted Parrot (Amazona vinacea) and sympatric cavity-using birds, mammals, and social insects in the subtropical Atlantic Forest, Argentina [PDF]
, 2017 Many forest bird species require tree cavities for nesting, and share this resource with a diverse community of animals. When cavities are limited, niche overlap can result in interspecific competition, with negative consequences for threatened ...
Bonaparte, Eugenia Bianca +1 more
core +1 more source
Journal of Threatened Taxa, 2016 Red-breasted Parakeet is one among the most widespread parakeets of the world. The ‘Near Threatened’ bird has been in pet trade for long and is already known as a feral bird from major cities in India.
Linda John +3 more
doaj +1 more source
Lazarus ecology: Recovering the distribution and migratory patterns of the extinct Carolina parakeet. [PDF]
, 2017 The study of the ecology and natural history of species has traditionally ceased when a species goes extinct, despite the benefit to current and future generations of potential findings.
Burgio, Kevin R +2 more
core +1 more source
Avian Research, 2022 Urban ecosystems are evolutionarily recent novel environments acting as biodiversity filters. Psittacidae birds are considered successful urban adapters mainly due to their generalist feeding and opportunistic behavior, allowing them to occupy ...
Cristel Álvarez-Castillo +4 more
doaj +1 more source