Results 21 to 30 of about 16,645 (235)
Neonicotinoid pesticides exert metabolic effects on avian pollinators
Scientific Reports, 2021 Neonicotinoids are neurotoxic systemic insecticides applied extensively worldwide. The impacts of common neonicotinoids like imidacloprid on non-target invertebrate pollinators have been widely studied, however effects on vertebrate pollinators have ...
Simon G. English +6 more
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Of hummingbirds and helicopters: Hovering costs, competitive ability, and foraging strategies [PDF]
, 2004 Wing morphology and flight kinematics profoundly influence foraging costs and the overall behavioral ecology of hummingbirds. By analogy with helicopters, previous energetic studies have applied the momentum theory of aircraft propellers to estimate ...
Altshuler, Douglas L. +2 more
core +1 more source
PLoS ONE, 2018 Proctophyllodes huitzilopochtlii Atyeo & Braasch 1966 (Acariformes: Astigmata: Proctophyllodidae), a feather mite, was found on feathers collected from five hummingbird species in California.
Youki K Yamasaki +7 more
doaj +1 more source
Accelerational Implications of Hummingbird Display Dives [PDF]
, 1995 Integrative ...
Dudley, Robert, Larimer, James L.
core +1 more source
Floral ecology of Puya ctenorhyncha (Bromeliaceae) an endemic plant of Bolivia
Botanical Sciences, 2023 Background: The terrestrial bromeliad Puya ctenorhyncha is a near-threatened endemic species that grows between 2,500-4,050 m asl. Hypotheses: Hummingbirds are the most important visitors of this plant given its morphological and floral traits. Study
Paola Velásquez-Noriega +2 more
doaj +1 more source
Salt intake and regulation in two passerine nectar drinkers: white-bellied sunbirds and New Holland honeyeaters [PDF]
, 2012 Avian nectarivores face the dilemma of having to conserve salts while consuming large volumes of a dilute, electrolyte-deficient diet. This study evaluates the responses to salt solutions and the regulation of salt intake in white-bellied sunbirds ...
Fleming, P.A. +2 more
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Metabolic Fates of Evening Crop-Stored Sugar in Ruby-Throated Hummingbirds (Archilochus colubris)
Diversity, 2019 During the day, hummingbirds quickly metabolize floral nectar to fuel high metabolic demands, but are unable to feed at night. Though stored fat is the primary nocturnal metabolic fuel, it has been suggested that hummingbirds store nectar in their crop ...
Erich R. Eberts +2 more
doaj +1 more source
PLoS ONE, 2018 Despite the popular use of hummingbird feeders, there are limited studies evaluating the effects of congregation, sharing food resources and increased contact when hummingbirds visit feeders in urban landscapes.
Ruta R Bandivadekar +7 more
doaj +1 more source
Can scalable design of wings for flapping wing micro air vehicle be inspired by natural flyers? [PDF]
, 2018 Lift production is constantly a great challenge for flapping wing micro air vehicles (MAVs). Designing a workable wing, therefore, plays an essential role. Dimensional analysis is an effective and valuable tool in studying the biomechanics of flyers.
Chen, Yi +4 more
core +1 more source
Avian cerebellar floccular fossa size is not a proxy for flying ability in birds [PDF]
, 2013 Extinct animal behavior has often been inferred from qualitative assessments of relative brain region size in fossil endocranial casts. For instance, flight capability in pterosaurs and early birds has been inferred from the relative size of the ...
Abel, Richard L. +8 more
core +13 more sources