Results 21 to 30 of about 2,006,275 (401)

Using digital recordings and sonogram analysis to obtain counts of yellow rails

Wildlife Society Bulletin, 2016
Autonomous recording units (ARUs) are emerging as a useful technology for the study and monitoring of animals that produce vocalizations. During summer and fall of 2013, we performed a series of experiments aimed at developing sampling protocols to count
Kiel L. Drake, Matthew Frey, Danica Hogan, Richard Hedley   +3 more
doaj   +1 more source

Multi-sensor geolocators unveil global and local movements in an Alpine-breeding long-distance migrant

Movement Ecology, 2023
Background To understand the ecology of long-distance migrant bird species, it is necessary to study their full annual cycle, including migratory routes and stopovers.
Yann Rime, Raphaël Nussbaumer, Martins Briedis, Martha Maria Sander, Dan Chamberlain, Valentin Amrhein, Barbara Helm, Felix Liechti, Christoph M. Meier   +8 more
doaj   +1 more source

Matching times of leading and following suggest cooperation through direct reciprocity during V-formation flight in ibis [PDF]

, 2015
One conspicuous feature of several larger bird species is their annual migration in V-shaped or echelon formation. When birds are flying in these formations, energy savings can be achieved by using the aerodynamic up-wash produced by the preceding bird ...
Alan M. Wilson, Andersson, Bairlein, Bernhard Voelkl, Cutts, Fish, Hainsworth, James R. Usherwood, Johannes Fritz, Mantel, Markus Unsöld, Steven J. Portugal   +11 more
core   +2 more sources

Minimum capture-recapture rates and years of banding station operations to obtain reliable adult annual survival estimates

Journal of Field Ornithology, 2022
We examined variability in adult annual survival rate estimates for 33 breeding bird species, using 2011–2019 data from a 38-station Monitoring Avian Productivity and Survivorship (MAPS) program in Alberta, Canada.
Danielle R. Kaschube, James F. Saracco, Chris Ray, Christine M. Godwin, Kenneth R. Foster, Peter Pyle   +5 more
doaj  

Introduction of the Hepatitis B Vaccine—Birth Dose: Methods of Improving Rates in a Milieu of Vaccine Hesitancy

Vaccines, 2023
The hepatitis B virus is a public health threat, chronically infecting over 240 million persons worldwide. The hepatitis B vaccine is 90% effective in preventing perinatal transmission if the first dose is given within the first 24 h of life, followed by
Shivon Belle Jarvis, Tessy Fenton-Lee, Sinéad Small   +2 more
doaj   +1 more source

Secretary bird optimization algorithm: a new metaheuristic for solving global optimization problems

Artificial Intelligence Review
This study introduces a novel population-based metaheuristic algorithm called secretary bird optimization algorithm (SBOA), inspired by the survival behavior of secretary birds in their natural environment.
Youfa Fu, Dan Liu, Jiadui Chen, Ling He
semanticscholar   +1 more source

A brief history of bird flu

Philosophical Transactions of the Royal Society of London. Biological Sciences, 2019
In 1918, a strain of influenza A virus caused a human pandemic resulting in the deaths of 50 million people. A century later, with the advent of sequencing technology and corresponding phylogenetic methods, we know much more about the origins, evolution ...
S. Lycett, Florian Duchatel, P. Digard
semanticscholar   +1 more source

The Bird Strike Challenge

Aerospace, 2020
Collisions between birds and aircraft pose a severe threat to aviation and avian safety. To understand and prevent these bird strikes, knowledge about the factors leading to these bird strikes is vital.
I. Metz, J. Ellerbroek, T. Mühlhausen, D. Kügler, J. Hoekstra   +4 more
semanticscholar   +1 more source

Miniaturized multi-sensor loggers provide new insight into year-round flight behaviour of small trans-Sahara avian migrants

Movement Ecology, 2018
Background Over the past decade, the miniaturisation of animal borne tags such as geolocators and GPS-transmitters has revolutionized our knowledge of the whereabouts of migratory species.
Felix Liechti, Silke Bauer, Kiran L. Dhanjal-Adams, Tamara Emmenegger, Pavel Zehtindjiev, Steffen Hahn   +5 more
doaj   +1 more source

Application of Deep-Learning Methods to Bird Detection Using Unmanned Aerial Vehicle Imagery

Italian National Conference on Sensors, 2019
Wild birds are monitored with the important objectives of identifying their habitats and estimating the size of their populations. Especially in the case of migratory bird, they are significantly recorded during specific periods of time to forecast any ...
Suk-Ju Hong, Yunhyeok Han, Sang-Yeon Kim, Ahyeong Lee, Ghiseok Kim   +4 more
semanticscholar   +1 more source