Results 11 to 20 of about 74,723 (348)

Long-Term Winter Population Trends of Corvids in Relation to Urbanization and Climate at Northern Latitudes

open access: yesAnimals, 2022
Corvids (crows, magpies, jays) live in a close association with humans, and therefore knowledge about their population status and changes will be an essential part of monitoring the quality of urban environments.
Jukka Jokimäki   +2 more
doaj   +1 more source

Patterns of evolution of MHC class II genes of crows (Corvus) suggest trans-species polymorphism [PDF]

open access: yesPeerJ, 2015
A distinguishing characteristic of genes that code for the major histocompatibility complex (MHC) is that alleles often share more similarity between, rather than within species.
John A. Eimes   +4 more
doaj   +2 more sources

Urban Birds Using Insects on Front Panels of Cars

open access: yesBirds, 2023
Urbanization influences the food availability and quality for birds in many ways. Although a great amount of food for birds is provided incidentally or intentionally in urban areas, the quantity of insect-based food can be reduced in cities.
Jukka Jokimäki   +1 more
doaj   +1 more source

The conscious crow [PDF]

open access: yesLearning & Behavior, 2021
SummaryNieder, Wagener, & Rinnert (Science, 369(6511), 1626–1629, 2020) demonstrated that some neurons in a prefrontal-like brain area of carrion crows signal neither the physical stimulus nor the intended action but the upcoming choice. This pattern of results implies that neural computations for consciousness can be generated by nonmammalian ...
openaire   +3 more sources

Multimodal thromboprophylaxis in low-risk patients undergoing lower limb arthroplasty: A retrospective observational cohort analysis of 1400 patients with ultrasound screening

open access: yesJournal of Orthopaedic Surgery, 2020
Purpose: This study reports the results of a multimodal thromboprophylaxis protocol for lower limb arthroplasty involving risk stratification, intraoperative calf compression, aspirin prophylaxis and early (within 4 h) post-operative mobilisation ...
Meredith Harrison-Brown   +5 more
doaj   +1 more source

Occurrence of Chlamydiaceae in Raptors and Crows in Switzerland

open access: yesPathogens, 2020
Bacteria of the family Chlamydiaceae are globally disseminated and able to infect many bird species. So far, 11 species of Chlamydia have been detected in wild birds, and several studies found chlamydial strains classified as genetically intermediate ...
Sandro Stalder   +5 more
doaj   +1 more source

Strong between-site variation in New Caledonian crows' use of hook-tool-making materials [PDF]

open access: yes, 2016
The study was funded through a BBSRC David Phillips Fellowship (grants BB/G023913/1 and BB/G023913/2 to CR) and doctoral studentships from the BBSRC (BK), JASSO (SS), and the School of Biology, University of St Andrews (JvdW).Functional tool use requires
Klump, Barbara Christina   +4 more
core   +1 more source

Towards a Dynamic Model of the Kangaroo Knee for Clinical Insights into Human Knee Pathology and Treatment: Establishing a Static Biomechanical Profile

open access: yesBiomimetics, 2019
There is limited understanding of how patella realignment or patellectomy to surgically manage patellofemoral pain (PFP) affects knee biomechanics. By analysing marsupials like kangaroos that lack an ossified patella, actionable biomimetic insight for ...
Manaal Fatima   +3 more
doaj   +1 more source

Theory of coupled resonator optical waveguides exhibiting high-order exceptional points of degeneracy [PDF]

open access: yes, 2017
We present an approach and a theoretical framework for generating high-order exceptional points of degeneracy (EPDs) in photonic structures based on periodic coupled resonator optical waveguides (CROWs). Such EPDs involve the coalescence of Floquet-Bloch
Capolino, F, Nada, MY, Othman, MAK
core   +4 more sources

Tunable delay lines in silicon photonics: coupled resonators and photonic crystals, a comparison [PDF]

open access: yes, 2010
In this paper, we report a direct comparison between coupled resonator optical waveguides (CROWs) and photonic crystal waveguides (PhCWs), which have both been exploited as tunable delay lines.
Canciamilla, A.   +8 more
core   +2 more sources

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