Results 81 to 90 of about 2,886,690 (245)

Big Bird: A global dataset of birds in drone imagery annotated to species level

Remote Sensing in Ecology and Conservation, EarlyView.
Drones are a valuable tool for surveying birds, but manually detecting and identifying birds in drone images is costly. We assembled a diverse dataset of 23 865 images of birds captured with 21 different drones across 11 countries. We labelled 4824 of these images, detailing the location, species, posture category, age category, and sex of 49 990 birds
Joshua P. Wilson, Tatsuya Amano, Thomas Bregnballe, Alejandro Corregidor‐Castro, Roxane Francis, Diego Gallego‐García, Jarrod C. Hodgson, Landon R. Jones, César R. Luque‐Fernández, Dominik Marchowski, John McEvoy, Ann E. McKellar, W. Chris Oosthuizen, Christian Pfeifer, Martin Renner, José Hernán Sarasola, Mateo Sokač, Roberto Valle, Adam Zbyryt, Richard A. Fuller   +19 more
wiley   +1 more source

Finding the balance: the effect of the position of external devices on little penguins [PDF]

, 2004
Many studies on the foraging behaviour of penguins rely on data collected with back-mounted data recorders, which can greatly affect the drag of swimming birds. In recent years, the size of devices has been minimised to reduce drag.
Chiaradia,Andre, Healy,Marg, Knott,Nathan, Ropert-Coudert,Yan   +3 more
core   +1 more source

Semi‐automated seal detection on the Western Antarctic Peninsula: an unsupervised machine learning approach for detecting ice seals in aerial survey data

Remote Sensing in Ecology and Conservation, EarlyView.
This study presents a semi‐automated, rule‐based image analysis pipeline to detect ice seals in aerial surveys of the Western Antarctic Peninsula during an unusually low sea ice year. By using simple hierarchical clustering instead of deep learning, the method substantially reduced human annotation effort while achieving 82% recall, identifying 758 ...
Claire McGinnity, Connor C.G. Bamford, Nathan Fenney, Andrew Fleming, Jaume Forcada, Michael S. Tift, Luis A. Hückstädt, Daniel P. Costa, Peter T. Fretwell   +8 more
wiley   +1 more source

Historical remote sensing highlights long‐term persistence of Emperor Penguin (Aptenodytes forsteri) colonies

Remote Sensing in Ecology and Conservation, EarlyView.
Remote sensing can reveal population dynamics of Antarctic penguin colonies. In this study, we analyze emperor penguin (Aptenodytes forsteri) guano stains in remote sensing imagery and discover colony presence predating known records for 18 colonies across Antarctica.
Martynas Bielinis, Michelle LaRue, Benjamin M. Kraemer, Catalina Munteanu   +3 more
wiley   +1 more source

Incubation of penguin eggs [PDF]

, 2003
The preservation of rare and endangered species of birds requires finding efficient, and above all successful, methods of breeding them in captivity. One strategy adopted is to remove eggs from the mother, making her lay more eggs, and then incubating ...
Edwards, Carina, Ovenden, Nick, Rottschäfer, Vivi   +2 more
core  

Rhyming in the cold: first evidence of soniferous fishes in the Southern Ocean

Remote Sensing in Ecology and Conservation, EarlyView.
The acoustic ecology of Southern Ocean fishes remains unknown due to a lack of dedicated acoustic research on the fishes of this ocean. Passive acoustic monitoring data were collected at the South African sub‐Antarctic Prince Edward Islands using an underwater acoustic recorder, and towed underwater Ski‐Monkey cameras were deployed to identify fish ...
Fannie W. Shabangu, Grant van der Heever, Charles von der Meden, Hannah Truter, Stephen J. Lamberth, Ofer Gon   +5 more
wiley   +1 more source

Precise limits from lepton flavour violating processes on the Littlest Higgs model with T-parity

, 2009
We recalculate the leading one-loop contributions to mu > e gamma and mu -> eee in the Littlest Higgs model with T-parity, recovering previous results for the former.
A. Denner, ATLAS collaboration, C. Tarantino, C.-X. Yue, CMS collaboration, F. del Aguila, F. del Águila, F. Penunuri, H. Georgi, H.-C. Cheng, H.-C. Cheng, I. Low, J. Hubisz, J. Hubisz, J. Wess, J.I Illana, M. Blanke, M. Blanke, M. Blanke ., M.D Jenkins, N. Arkani-Hamed, T. Han, T.P. Cheng, W. Altmannshofer .   +23 more
core   +1 more source

Bayesian total evidence dating reveals the recent crown radiation of penguins [PDF]

, 2016
The total-evidence approach to divergence-time dating uses molecular and morphological data from extant and fossil species to infer phylogenetic relationships, species divergence times, and macroevolutionary parameters in a single coherent framework ...
Drummond, Alexei J., Gavryushkina, Alexandra, Heath, Tracy A., Ksepka, Daniel T., Stadler, Tanja, Welch, David   +5 more
core   +5 more sources

“There is a Place for Us Here”: Exploring Sex, Gender, Reproduction, Sexual Behavior, and Orientation Narratives Supporting Students With Queer Genders in Biology Courses

Journal of Research in Science Teaching, EarlyView.
ABSTRACT Queer undergraduates describe a climate in STEM fields and classrooms that is both hostile to and silent on queer identities, leading to experiences of social exclusion, devaluation as a scientist, and discrimination. In the few studies that have specifically focused on trans and non‐binary undergraduates (i.e., students with queer genders ...
Sarah L. Eddy, Sam Ahler, Juno Baer, E. March, A. Gutierrez, O. Turner, Beth Wittmann, A. Kelly Lane, A. M. Aramati Casper   +8 more
wiley   +1 more source

Facilitating macrosystem biology with organismal‐scale airborne remote sensing: Challenges and opportunities

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Emergent ecosystem properties, such as population and trait distributions, biodiversity and energy and water fluxes, occur because of the dynamic interactions of individuals in their environment.
Sarah J. Graves, Ritesh Chowdhry, Meilun Zhou, Ira Harmon, Ben Weinstein, S. K. Morgan Ernest, Alina Zare, Ethan P. White, Stephanie A. Bohlman   +8 more
wiley   +1 more source