Results 51 to 60 of about 832 (173)
Gastric impaction: an important health and welfare issue of growing ostriches
Agricultura Tropica et Subtropica, 2020 Ostrich farming serves as a source for meat, feathers, skin, eggs, and oil. In general, ostriches are hardy birds that can resist a wide range of climatic harshness and some diseases.
Irfan Muhammad +3 more
doaj +1 more source
Spatial Insurance of Distinct Ecological Functions
Ecology Letters, Volume 28, Issue 11, November 2025.We present a new trait‐based framework to quantify spatial functional insurance of distinct ecological functions amongst ecological communities. We identify communities that disproportionately insure (functional sources) or depend on (functional sinks) neighbour communities.
N. Mouquet +11 more
wiley +1 more source
The articulation of sauropod necks: methodology and mythology. [PDF]
PLoS ONE, 2013 Sauropods are often imagined to have held their heads high atop necks that ascended in a sweeping curve that was formed either intrinsically because of the shape of their vertebrae, or behaviorally by lifting the head, or both.
Kent A Stevens
doaj +1 more source
Reduced Adult Neurogenesis in Humans Results From a Tradeoff Rather Than Direct Negative Selection
BioEssays, Volume 47, Issue 9, September 2025.Embryonic radial glia (RG) generate neurons, glial cells, and later adult neural stem cells, which sustain adult neurogenesis (top, left to right). Human‐specific genetic modifications (blue arrow), selected to boost early RG neurogenic activity, may lead to premature RG exhaustion and reduced adult neurogenesis in the human brain (bottom).
David Morizet, Laure Bally‐Cuif
wiley +1 more source
Parasite Fauna of Ostriches, Emus and Rheas
Agricultura Tropica et Subtropica, 2012 In most parts of the world ratite farming (i.e. farming of ostriches, emus and rheas) is a new fi eld of livestock production. These birds are livestock with broad utilisation of their products.
Nemejc Karel, Lukesova Daniela
doaj +1 more source
Assessing arboreal adaptations of bird antecedents: testing the ecological setting of the origin of the avian flight stroke. [PDF]
PLoS ONE, 2011 The origin of avian flight is a classic macroevolutionary transition with research spanning over a century. Two competing models explaining this locomotory transition have been discussed for decades: ground up versus trees down. Although it is impossible
T Alexander Dececchi, Hans C E Larsson
doaj +1 more source
Conservation Genetics of the Reintroduced Giant Tortoises (Aldabrachelys gigantea) in Madagascar
Ecology and Evolution, Volume 15, Issue 9, September 2025.The Aldabra giant tortoise is the only surviving lineage of Malagasy megafauna, eradicated by human activities over the last millennium. In 2018, the first rewilding project was launched in the Anjajavy Reserve (NW Madagascar), using 12 founder individuals of unknown origin.
Guillaume Besnard +9 more
wiley +1 more source
International Journal of Osteoarchaeology, Volume 35, Issue 5, Page 284-294, September/October 2025.ABSTRACT Agents of taphonomy can bias skeletal parts and the frequency of bones in archaeological sites. An important factor to consider is the possible effect of bone density‐mediated attrition on archaeornithological assemblages. We scanned willow ptarmigan (Lagopus lagopus) specimens using a Lunar iDXA and an enCcore small animal body add‐on to ...
Frank J. Dirrigl Jr. +1 more
wiley +1 more source
Journal of Lipid Research, 2009 The chemical structures of the three major bile acids present in the gallbladder bile of the Red-winged tinamou (Rhynchotus rufescens), an early evolving, ground-living bird related to ratites, were determined.
Lee R. Hagey +9 more
doaj +1 more source
Papers in Palaeontology, Volume 11, Issue 4, July/August 2025.Abstract The Wealden Group of southern England was deposited during the late Berriasian to early Aptian interval. It records a critical time in the development of iguanodontian dinosaur diversity, which increased from low levels during the Jurassic to higher levels in the Aptian and Albian. A new iguanodontian dinosaur, Istiorachis macarthurae gen.
Jeremy A. F. Lockwood +2 more
wiley +1 more source