Results 91 to 100 of about 2,006,275 (401)

Status and distribution changes of the endangered Green Peafowl (Pavo muticus) in China over the past three decades (1990s‒2017)

Avian Research, 2018
Background Understanding the changes in population dynamics, including demographics, distribution and threats, is essential for species status assessing.
Dejun Kong, Fei Wu, Pengfei Shan, Jianyun Gao, Dao Yan, Weixiong Luo, Xiaojun Yang   +6 more
doaj   +1 more source

Phylogenomics of white-eyes, a ‘great speciator’, reveals Indonesian archipelago as the center of lineage diversity

eLife, 2020
Archipelagoes serve as important ‘natural laboratories’ which facilitate the study of island radiations and contribute to the understanding of evolutionary processes. The white-eye genus Zosterops is a classical example of a ‘great speciator’, comprising
Chyi Yin Gwee, Kritika M Garg, Balaji Chattopadhyay, Keren R Sadanandan, Dewi M Prawiradilaga, Martin Irestedt, Fumin Lei, Luke M Bloch, Jessica GH Lee, Mohammad Irham, Tri Haryoko, Malcolm CK Soh, Kelvin S-H Peh, Karen MC Rowe, Teuku Reza Ferasyi, Shaoyuan Wu, Guinevere OU Wogan, Rauri CK Bowie, Frank E Rheindt   +18 more
doaj   +1 more source

Vision‐Assisted Avocado Harvesting with Aerial Bimanual Manipulation

Advanced Robotics Research, EarlyView.
This work outlines the design and implementation of a bimanual aerial robot that employs visual perception and learning to detect, reach, and harvest avocados. A new gripper and fixer arm assembly is used to harvest avocados, while visual perception enables the detection of avocados and estimation of their position and orientation for determining ...
Zhichao Liu, Jingzong Zhou, Caio Mucchiani, Konstantinos Karydis   +3 more
wiley   +1 more source

Cellularity of adipose depots in the genetically obese Zucker rat

Journal of Lipid Research, 1971
Cell size and number of three adipose depots, epididymal, retroperitoneal, and subcutaneous, were determined during growth of the obese Zucker rat (“fatty”) and nonobese Zucker control.
P.R. JOHNSON, L.M. ZUCKER, J.A.F. CRUCE, JULES HIRSCH   +3 more
doaj   +1 more source

Information Transmission Strategies for Self‐Organized Robotic Aggregation

Advanced Robotics Research, EarlyView.
In this review, we discuss how information transmission influences the neighbor‐based self‐organized aggregation of swarm robots. We focus specifically on local interactions regarding information transfer and categorize previous studies based on the functions of the information exchanged.
Shu Leng, Zihan Li, Yifeng Shao, Jinhao Liu, Li Yu, Shuguang Li   +5 more
wiley   +1 more source

Extreme migratory connectivity and apparent mirroring of non-breeding grounds conditions in a severely declining breeding population of an Afro-Palearctic migratory bird

Scientific Reports
Understanding the distribution of breeding populations of migratory animals in the non-breeding period (migratory connectivity) is important for understanding their response to environmental change.
Máire Kirkland, Nathaniel N. D. Annorbah, Lee Barber, John Black, Jeremy Blackburn, Michael Colley, Gary Clewley, Colin Cross, Mike Drew, Oliver J. L. Fox, Vicky Gilson, Steffen Hahn, Chas Holt, Mark F. Hulme, John Jarjou, Dembo Jatta, Emmanuel Jatta, Kevin Leighton, Ernestina Mensah-Pebi, Chris Orsman, Naffie Sarr, Roger Walsh, Leo Zwarts, Robert J. Fuller, Philip W. Atkinson, Chris M. Hewson   +25 more
doaj   +1 more source

Black-backed Woodpecker occupancy is extensive in green conifer forests of the southern Cascade Mountains, Oregon

Avian Conservation and Ecology, 2021
Black-backed Woodpeckers (Picoides arcticus) are widely considered a burned forest specialist across much of their range. Several recent studies have examined their occurrence in "green" coniferous forests that have not been recently burned, but Black ...
Jake Verschuyl, Jaime L. Stephens, Andrew J. Kroll, Katherine E. Halstead, Dennis Rock   +4 more
doaj  

Comparative Gut Microbiota of 59 Neotropical Bird Species

Frontiers in Microbiology, 2015
The gut microbiota of vertebrates are essential to host health. Most non-model vertebrates, however, lack even a basic description of natural gut microbiota biodiversity.
S. Hird, C. Sánchez, Bryan C. Carstens, R. Brumfield   +3 more
semanticscholar   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

Monitoring at management scales: Multi‐scale trend estimates for bird populations in the western United States

Ecosphere
Widespread declines in North American birds have elevated the need for proactive conservation planning and delivery to promote recovery. Long‐term monitoring at large spatial and temporal extents has been critical to identifying declines, but there is ...
Jacy S. Bernath‐Plaisted, Jennifer M. Timmer, Jessie Reese, Quresh S. Latif, Liza Rossi, Chris E. Latimer, Ian Abernethy, Sarah L. Bullock, Jay D. Carlisle, Melissa Dressen, Ryan L. Healey, Matthew McLaren, Christian Meny, Rebecca E. Newton, Allison Shaw, Matt C. Smith, Rob A. Sparks, Zachary P. Wallace, Chris White, Thomas B. Ryder   +19 more
doaj   +1 more source