Results 81 to 90 of about 30,033 (263)
Acta Botânica Brasílica, 2018 Hummingbirds are the main pollinators of most bromeliad species, whose nectar traits usually respond to the selective pressures imposed by pollinators.
Carlos E. P. Nunes +4 more
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Experimental Studies of Tail Shapes for Hummingbird-Like Flapping Wing Micro Air Vehicles
IEEE Access, 2020 The stability of flying of a hummingbird-like flapping-wing micro air vehicle (MAV) has been challenging. In this paper, experimental studies are reported on the tail shapes of hummingbird-like flapping-wing MAVs, since tails play an important role in ...
Yanghai Nan +3 more
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract The rate at which flowers dispense pollen across successive pollinator visits is a key functional trait influencing male reproductive success. Pollen presentation theory (PPT) predicts that when pollinators are abundant and actively groom their bodies to collect pollen,
Mario Vallejo‐Marín, Anna Lundgren
wiley +1 more source
Revista Chilena de Historia Natural, 2007 Nectar-feeding birds oscillate between avoiding overhydration when they are feeding and preventing dehydration during fasts. Here, we examined how resting rates of total evaporative water loss (TEWL) and metabolic water production (MWP) influence water ...
BRADLEY HARTMAN BAKKEN, PABLO SABAT
doaj
Hummingbirds and the plants they visit in the Tehuacán-Cuicatlán Biosphere Reserve, Mexico
Revista Mexicana de Biodiversidad, 2011 We describe the relative abundance, plant species visited, and plant communities used by hummingbird species inhabiting the Tehuacán-Cuicatlán Biosphere Reserve, a semiarid area in South-central Mexico.
Raúl Ortiz-Pulido +3 more
doaj +1 more source
, 2010 Caltech-UCSD Birds 200 (CUB-200) is a challenging image dataset annotated with 200 bird species. It was created to enable the study of subordinate categorization, which is not possible with other popular datasets that focus on basic level categories ...
Belongie, Serge +6 more
core +1 more source
Aerodynamics of the hovering hummingbird
Nature, 2005 Despite profound musculoskeletal differences, hummingbirds (Trochilidae) are widely thought to employ aerodynamic mechanisms similar to those used by insects. The kinematic symmetry of the hummingbird upstroke and downstroke has led to the assumption that these halves of the wingbeat cycle contribute equally to weight support during hovering, as ...
Warrick, Douglas R +2 more
openaire +3 more sources
Journal of Applied Ecology, EarlyView.A framework for the support of pollinators in urban areas is developed here, based on five pillars: nesting, flower resources, artificial support, management and society acceptance, with additional key elements from science and society. Society should incorporate strategies for pollinators as in this framework by means of co‐planning with stakeholders,
Rosa Ranalli +3 more
wiley +1 more source
NOU Spring Field Days and Annual Meeting, Kimball, May 20–22, 2016 [PDF]
, 2016 The annual meeting of the Nebraska Ornithologists\u27 Union was held at the Kimball Event Center on May 20–22, 2016, and was organized by Robin Harding and Betty Grenon.
Paseka, Janis
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Insight Into Body Size Evolution in Aves: Based on Some Body Size–Related Genes
Integrative Zoology, EarlyView.These findings provide new insights into the genetic determinants of body size evolutionary mechanisms in Aves. ABSTRACT Birds exhibit remarkable variations in body size, making them an ideal group for the study of adaptive evolution. However, the genetic mechanisms underlying body size evolution in avian species remain inadequately understood.
Chaoyang Luo +8 more
wiley +1 more source