Results 21 to 30 of about 202,210 (324)

The formation of “mega‐flocks” depends on vegetation structure in montane coniferous forests of Taiwan

open access: yesEcology and Evolution, 2022
A mixed‐species bird flock is a social assemblage where two or more bird species are moving together while foraging and might benefit from increased foraging efficiency and antipredator vigilance.
Chun‐Chieh Liao   +2 more
doaj   +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

Epidemiology of Mycoplasma agalactiae and Mycoplasma mycoides cluster in flocks of northeastern Brazil

open access: yesCiência Rural, 2018
: The present study aimed to investigate contagious agalactia (CA) in flocks from Pernambuco State. The study involved 225 goats and 63 ewes; 288 milk samples and 100 vaginal swabs were collected in total.
Sandra Batista dos Santos   +6 more
doaj   +1 more source

Detection of Mycoplasma gallisepticum and Mycoplasma synoviae among Commercial Poultry in Khouzestan Province, Iran [PDF]

open access: yesArchives of Razi Institute, 2018
Mycoplasmas are important  avian  pathogens,  which  can  cause  both  respiratory  disease  and  synovitis  in  poultry  that  result  in  considerable  economic  losses  to  the  poultry  industry  all  over  the  world.  The  aim  of  this  study  was 
R. Ghadimipour, D. Gharibi, M. Mayahi
doaj   +1 more source

Behavioural plasticity and the transition to order in jackdaw flocks

open access: yesNature Communications, 2019
Collective behaviour is typically thought to arise from individuals following fixed interaction rules. The possibility that interaction rules may change under different circumstances has thus only rarely been investigated.
Hangjian Ling   +6 more
semanticscholar   +1 more source

Starling flock networks manage uncertainty in consensus at low cost [PDF]

open access: yes, 2013
Flocks of starlings exhibit a remarkable ability to maintain cohesion as a group in highly uncertain environments and with limited, noisy information.
Cavagna, Andrea   +4 more
core   +4 more sources

Complex patterns of collective escape in starling flocks under predation

open access: yesBehavioral Ecology and Sociobiology, 2019
Collective behaviour of animals has been a main focus of recent research, yet few empirical studies deal with this issue in the context of predation, a major driver of social complexity in many animal species.
R. F. Storms   +3 more
semanticscholar   +1 more source

Scale-free correlations in starling flocks [PDF]

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2009
From bird flocks to fish schools, animal groups often seem to react to environmental perturbations as if of one mind. Most studies in collective animal behavior have aimed to understand how a globally ordered state may emerge from simple behavioral rules.
A. Cavagna   +6 more
semanticscholar   +1 more source

Salmonella Prevalence in Turkey Flocks before and after Implementation of the Control Program in Germany

open access: yesAgriculture, 2013
The objective of the study was to describe the Salmonella prevalence in turkey flocks before and after the implementation of the Salmonella control program in Germany and to identify factors that are potentially associated with the presence of Salmonella
Bernd-Alois Tenhagen   +3 more
doaj   +1 more source

Associations between carcass weight uniformity and production measures on farm and at slaughter in commercial broiler flocks

open access: yesPoultry Science, 2019
In poultry flocks, flock weight uniformity is often defined as the percent individuals within 10% of the mean body weight (BW) and the variability of this uniformity can be expressed as the CV of BW.
G. Vasdal   +6 more
semanticscholar   +1 more source

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