Results 31 to 40 of about 137,387 (310)

Dynamic Corridor Illusion in Pigeons: Humanlike Pictorial Cue Precedence Over Motion Parallax Cue in Size Perception

open access: yesi-Perception, 2020
Depth information is necessary for perceiving the real size of objects at varying visual distances. To investigate to what extent this size constancy present in another vertebrate class, we addressed the two questions using pigeons: (a) whether pigeons ...
Yuya Hataji   +2 more
doaj   +1 more source

Pigeons (Columba livia domestica) Are Susceptible to Infectious Bursal Disease: A Comparative Study of Their Hematological and Serum Biochemical Alterations

open access: yesFrontiers in Veterinary Science, 2021
The hematological and serum biochemical alterations following very virulent infectious bursal disease virus (IBDV) infection in pigeons and chickens were evaluated in this study. Sixty IBDV seronegative birds comprising 30 (3–6 weeks old) pigeons and 30 (
Ochuko Orakpoghenor   +8 more
doaj   +1 more source

Pigeons home faster through polluted air. [PDF]

open access: yes, 2016
Air pollution, especially haze pollution, is creating health issues for both humans and other animals. However, remarkably little is known about how animals behaviourally respond to air pollution.
Blumstein, Daniel T   +2 more
core   +1 more source

High prevalence of Sarcocystis calchasi in racing pigeon flocks in Germany [PDF]

open access: yes, 2019
The apicomplexan parasite Sarcocystis calchasi (Coccidia: Eimeriorina: Sarcocystidae) is the causative agent of Pigeon Protozoal Encephalitis (PPE) and infects birds of the orders Columbiformes, Piciformes and Psittaciformes.
Failing, Klaus   +4 more
core   +1 more source

Survey of parasites in domestic pigeons (Columba livia) in Tripoli, Libya

open access: yesOpen Veterinary Journal, 2018
This study was a preliminary survey for identification of parasites (endoparasites and ectoparasites) and their prevalence in domestic pigeons (Columba livia) in Tripoli; Libya.
Ferial A. Alkharigy   +2 more
semanticscholar   +1 more source

Homing pigeons as a model for the influence of experience on brain composition-including considerations on evolutionary theory

open access: yesCommunicative & Integrative Biology, 2010
The brain of homing pigeons seems to be functionally adapted to homing with e.g. larger hippocampi and olfactory bulbs. Furthermore, functional lateralization occurs as well in homing pigeons.
Julia Mehlhorn, Gerd Rehkämper
doaj   +1 more source

Immune pathogenesis in pigeons during experimental Prohemistomum vivax infection

open access: yesFrontiers in Veterinary Science, 2022
Prohemistomum vivax is a small trematode belonging to the family Cyathocotylidae, infecting fish-eating birds and mammals, including humans. However, no data on molecular identification and immune pathogenesis are available, challenging effective ...
Asmaa M. I. Abuzeid   +6 more
doaj   +1 more source

The magnetite-based receptors in the beak of birds and their role in avian navigation [PDF]

open access: yes, 2012
Iron-rich structures have been described in the beak of homing pigeons, chickens and several species of migratory birds and interpreted as magnetoreceptors.
Wiltschko, Roswitha, Wiltschko, Wolfgang
core   +1 more source

Effect of formaldehyde and urea contaminated feed exposure into the liver of young and adult pigeons (Columba livia) [PDF]

open access: yesVeterinary World, 2021
Background and Aim: Nowadays, toxic chemical contaminants in food are a major food safety problem in Bangladesh. Among toxic food contaminants, formalin is used to preserve fruit, vegetables, and fish, where urea is used for the whitening of rice and ...
Imam Hasan   +4 more
doaj   +1 more source

Reciprocal relationships in collective flights of homing pigeons [PDF]

open access: yes, 2011
Collective motion of bird flocks can be explained via the hypothesis of many wrongs, and/or, a structured leadership mechanism. In pigeons, previous studies have shown that there is a well-defined hierarchical structure and certain specific individuals ...
D. J. T. Sumpter   +6 more
core   +2 more sources

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