Results 41 to 50 of about 1,218,604 (309)

Early birds [PDF]

open access: yesCurrent Biology, 2004
Concern is growing about the impact of climate change on organisms but there's much uncertainty about its effects. A new European study of two bird species does not provide good news.
openaire   +2 more sources

Bird flocks [PDF]

open access: yesCurrent Biology, 2020
Steven Portugal introduces the behavioral and aerodynamic underpinnings of aerial flocking in birds.
openaire   +2 more sources

Odonata Collected with a Mist Net in Baraga County, Michigan, including a New Record for the Upper Peninsula [PDF]

open access: yes, 2017
Excerpt: In the summer of 1966, a study of the interrelation of birds and forest insects was initiated at Michigan Technological University. Japanese mist nets were used, among other methods, to make population estimates of birds.
Sloan, Norman F
core   +2 more sources

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

open access: yesAdvanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand   +13 more
wiley   +1 more source

State of India's Birds 2023: A framework to leverage semi‐structured citizen science for bird conservation

open access: yesEcosphere
Birds and their habitats are threatened with extinction around the world. Regional assessments of the “State of Birds” are a vital means to prioritize data‐driven conservation action by informing national and global policy.
Ashwin Viswanathan   +15 more
doaj   +1 more source

Influence of Habitat and Food Resource Availability on Common Raven Nest Site Selection and Reproductive Success in Mediterranean Forests

open access: yesBirds, 2021
Bird nest selection in forests can be influenced by the composition of key structural elements and resources. This has important consequences in terms of species population dynamics since it can determine reproduction success.
Amalia Segura, Pelayo Acevedo
doaj   +1 more source

Optoelectrical Devices for Neural Interfacing: Engineering Integration, Stability, and Multimodal Sensing

open access: yesAdvanced Healthcare Materials, EarlyView.
Implantable optoelectrical devices are an effective resource for the modulation and monitoring of neural activity with high spatiotemporal resolution. This review discusses current challenges faced by these devices and outlines future perspectives for the development of next‐generation neural interfaces targeting chronic, multisite, and multimodal ...
Stella Aslanoglou   +4 more
wiley   +1 more source

Non-Invasive Monitoring of the Spatio-Temporal Dynamics of Vocalizations among Songbirds in a Semi Free-Flight Environment Using Robot Audition Techniques

open access: yesBirds, 2021
To understand the social interactions among songbirds, extracting the timing, position, and acoustic properties of their vocalizations is essential. We propose a framework for automatic and fine-scale extraction of spatial-spectral-temporal patterns of ...
Shinji Sumitani   +4 more
doaj   +1 more source

Ethological risk factors of West nile infection of wild birds in Senegal [PDF]

open access: yes, 2007
Serological studies performed in 2003, as well as viral isolations demonstrated that West Nile fever (WNF) was endemic in Senegal (West Africa). Large populations of potentially infected birds fly each year from West Africa to Europe.
Baillon, François   +7 more
core  

Microsatellite typing of avian clinical and environmental isolates of Aspergillus fumigatus [PDF]

open access: yes, 2011
Aspergillosis is one of the most common causes of death in captive birds. Aspergillosis in birds is mainly caused by Aspergillus fumigatus, a ubiquitous and opportunistic saprophyte.
Beernaert, Lies   +8 more
core   +3 more sources

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