Results 1 to 10 of about 381 (167)

Social learning in great white pelicans (Pelecanus onocrotalus): A preliminary study [PDF]

Learning and Behavior, 2020
Great white pelicans (Pelecanus onocrotalus) exhibit life-history parameters and ecological traits thought to be associated with social learning, and advanced cognitive processing more generally. In this study we investigated whether this species can acquire novel behavior socially in a foraging context.
Auguste Von Bayern, Samara Danel, Dufour Valerie   +2 more
exaly   +7 more sources

Breeding biology of Great White Pelican Pelecanus onocrotalus at Lake Tana, Ethiopia [PDF]

Heliyon
Great White Pelicans, once thriving at Lake Shala, have faced a decline in breeding pairs at Lake Abijata due to increased salinity and overfishing. A study at Lake Tana Biosphere, from December 2020 to December 2021, aimed to understand their breeding ...
Ahmed Yesuf Yimer, Shimelis Aynalem Zelelew, Mezgebu Ashagrie, Azmeraw Alemkere, Aschalew Alelign   +4 more
doaj   +4 more sources

Feather Corticosterone Measurements and Behavioral Observations in the Great White Pelican (Pelecanus onocrotalus) Living under Different Flight Restraint Conditions in German Zoos [PDF]

Animals, 2021
The pinioning of birds was previously one of the most-accepted forms of mutilation in zoos. Despite a lack of knowledge on the effects of deflighting procedures with regard to the well-being of deflighted birds, pelicans are often reversibly deflighted ...
Gudrun Haase, Katrin Baumgartner, Lorenzo von Fersen, Roswitha Merle, Mechthild Wiegard, Hermann Will, Lukas Reese, Oriol Tallo-Parra, Annais Carbajal, Manel Lopez-Bejar, Christa Thöne-Reineke   +10 more
doaj   +2 more sources

Molecular Survey of Chlamydial Infections in Three Public Bird Collections in Tehran, Iran. [PDF]

Vet Med Sci
One hundred and eight samples from different avian species were collected and tested for Chlamydia spp. infection using PCR. Thirty‐seven samples from Psittaciformes, Columbiformes, Falconiformes, Galliformes and Charadriiformes were positive for Chlamydia DNA.
Hashemian SMM, Madani SA, Peighambari SM.   +2 more
europepmc   +2 more sources

Morphology, biology and taxonomy of Dendritobilharzia loossi Skrjabin, 1924 (Trematoda: Bilharziellidae), a parasite of Pelecanus onocrotalus (Pelecanidae) and Anas plathyrinchos (Anatidae) [PDF]

Parasite, 2011
Life cycles of Dendritobilharzia loossi Skrjabin, 1924, a parasite of waterbirds, and its morphobiological traits are studied and described. Mollusks Anisus spirorbis, the infection rate of which in natural environments reaches 1.3-1.9%, were recorded as
Akramova F.D., Azimov D.A., Shakarboev E.B.   +2 more
doaj   +2 more sources

A Derived Morphology of the Quadrate May Support a Previously Unrecognized Major Higher-Level Clade of Neoavian Birds. [PDF]

J Morphol
The avian quadrate plays a critical role in cranial kinesis, but few comparative studies exist of its morphological variation across higher‐level taxa. In this study, the occurrence of a markedly concave articular facet of the condylus medialis is surveyed across neornithine birds.
Mayr G.
europepmc   +2 more sources

Recombinase-aid amplification combined with lateral flow detection assay for sex identification of the great white pelican (Pelecanus onocrotalus) [PDF]

Scientific Reports
Sex identification in avian species is essential for biodiversity conservation and ecological studies. However, the sex of nearly half of the birds could not be identified based on their external appearance.
Fanwen Zeng, Xuanjiao Chen, Wanhuan Zhong, Tanzipeng Chen, Jiaqi Sa, Guoqian Wang, Shouquan Zhang, Shiming Peng   +7 more
doaj   +2 more sources

Effects of Flight Restraint and Housing Conditions on Feather Corticosterone in White Storks Under Human Care [PDF]

Animals
Flight is part of the natural behaviours of most bird species, and as a consequence, flight restraint in zoos, even for those species that are primarily ground-dwelling, encounters increasing animal welfare concerns.
Frederike Liermann, Katrin Baumgartner, Ralph Simon, Hermann Will, Lorenzo von Fersen, Roswitha Merle, Christa Thöne-Reineke   +6 more
doaj   +2 more sources

Annual report on surveillance for avian influenza in poultry and wild birds in Member States of the European Union in 2022. [PDF]

EFSA J, 2023
Abstract All European Union (EU) Member States (MSs) are required to implement surveillance for avian influenza (AI) in poultry and wild birds and (i) to notify the outbreaks, when relevant and (ii) to report the results to the responsible authority.
European Food Safety Authority (EFSA), Aznar I, Kohnle L, Stoicescu A, van Houtum A, Zancanaro G.   +5 more
europepmc   +2 more sources

Rediscovery and redescription of clinostomid trematodes from Pelecanus onocrotalus

Parasitology
This study reports the first rediscovery and redescription of Euclinostomum lauroi in more than 40 years, based on an adult specimen recovered from the oesophagus of a great white pelican (Pelecanus onocrotalus) in Lake Tana, Ethiopia.
Federica Marcer, Marshet Adugna Mitiku, Perla Tedesco, Erica Marchiori, Hagos Ashenafi, Cinzia Tessarin, Aurora Lattanzi, Andrea Gustinelli, Monica Caffara   +8 more
doaj   +2 more sources