Results 41 to 50 of about 29,283 (301)

Laying hens in furnished cages [PDF]

open access: yes, 2003
Concern for the welfare of laying hens housed in conventional cages has led to a change of the Animal Welfare Legislation in Sweden, implying that cages must provide possibilities for hens to lay eggs in a nest, to rest on a perch and to use litter. Such
Wall, Helena
core  

Bioinspired Adaptive Leg‐Claw Enables Robust Perching and Grasping for UAVs

open access: yesAdvanced Science, EarlyView.
Inspired by owl limb morphology and bat roosting behavior, this study presents a bioinspired adaptive leg‐claw mechanism that enables UAVs to perform robust and versatile perching and grasping. The design integrates a four‐link tibial structure, tension‐driven deformable feet, and active control, enabling stable perching on various branches and ...
Tianyu Cheng   +6 more
wiley   +1 more source

Effect of perches on morphology, welfare and behaviour of captive reared pheasants

open access: yesItalian Journal of Animal Science, 2017
This study investigated the effect of providing elevated perches in growing pens on the morphology and behaviour of young pheasants. Pheasants reared with perches from one week old were observed roosting off the ground significantly more frequently when ...
Francesco Santilli, Marco Bagliacca
doaj   +1 more source

Smart Bioinspired Material‐Based Actuators: Current Challenges and Prospects

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This work gathers, in a review style, an extensive and comprehensive literature overview on the development of autonomous actuators based on synthetic materials, bringing together valuable knowledge from several studies. Furthermore, the article identifies the fundamental principles of actuation mechanisms and defines key parameters to address the size
Alejandro Palacios   +4 more
wiley   +1 more source

Selección de presas por el caracolero (Rostrhamus sociabilis) en cuerpos de agua permanentes y temporarios del centro de Argentina. [PDF]

open access: yes, 2011
– En este estudio se analizó el patrón de selección de presas del caracolero (Rostrhamus sociabilis) sobre el caracol de agua dulce Pomacea canaliculata en la provincia de Buenos Aires, Argentina.
Kittlein, Marcelo Javier   +1 more
core  

What are the important landscape components for habitat selection of the ortolan bunting Emberiza hortulana in northern limit of range? [PDF]

open access: yes, 2015
Ortolan buntings Emberiza hotulana have undergone one of the most severe population declines of any European farmland bird over the last thirty years. The aim of this study was to find out which habitat features, including crop characteristics,
Elts, Jaanus   +2 more
core   +2 more sources

Classifying avian drinking behaviour: ecological insights and implications in a changing world

open access: yesBiological Reviews, EarlyView.
ABSTRACT Water is a fundamental currency of life, and its availability significantly influences animal behaviour, physiology and distributions. However, our knowledge around the dependence on water for drinking and the direct and indirect mechanisms driving related behaviours remains partial in the context of changing climates. Here, we review patterns
Shannon R. Conradie, Marc T. Freeman
wiley   +1 more source

Supplemental Magnesium in Diets for Growing Pullets and Hens: Growth, Skeletal Development, and Egg Production

open access: yesJournal of Applied Poultry Research, 2019
SUMMARY: Growing pullets and subsequently laying hens were fed practical type corn-soybean meal diets with and without 0.1% supplemental magnesium oxide (MgO) through 36 wk of age.
M.S. Lilburn   +3 more
doaj   +1 more source

How wildlife respond to tropical cyclones: short‐term tactics and long‐term impacts

open access: yesBiological Reviews, EarlyView.
ABSTRACT From butterflies to lizards and from sharks to seabirds, wildlife exhibit tactics to survive the impacts of tropical cyclones, also known as hurricanes, cyclones, or typhoons depending on where they occur. Some species seek refuge during the storm by moving, some remain in place and ride it out, and others move longer distances, avoiding the ...
Erin L. Koen   +15 more
wiley   +1 more source

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