Results 21 to 30 of about 16,518 (216)

Accelerational Implications of Hummingbird Display Dives [PDF]

, 1995
Integrative ...
Dudley, Robert, Larimer, James L.
core   +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., Nicolson, S.W., Purchase, C.   +2 more
core   +2 more sources

Evaluation of Proctophyllodes huitzilopochtlii on feathers from Anna's (Calypte anna) and Black-chinned (Archilochus alexandri) Hummingbirds: Prevalence assessment and imaging analysis using light and tabletop scanning electron microscopy.

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, Emily E Graves, Robin S Houston, Barry M OConnor, Patricia E Kysar, Mary H Straub, Janet E Foley, Lisa A Tell   +7 more
doaj   +1 more source

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, Natalia I. Sandoval-Herrera, Christine A. Bishop, Melissa Cartwright, France Maisonneuve, John E. Elliott, Kenneth C. Welch   +6 more
doaj   +1 more source

Global Trends in the Status of Bird and Mammal Pollinators [PDF]

, 2015
Biodiversity is declining, with direct and indirect effects on ecosystem func-tions and services that are poorly quantified. Here, we develop the first globalassessment of trends in pollinators, focusing on pollinating birds and mam-mals.
Barnosky, Benning, Biesmeijer, BirdLife International, Borgella, Butchart, Butchart, Butchart, Böhm, Courter, Cronk, De Grammont, Eilers, Fleming, Gallai, Garibaldi, Gerlach, Hadley, Hoffmann, Hoffmann, Howell, Hoyo, IUCN, Kasso, Klein, Kremen, Kunz, Lebuhn, Lewis, McKinney, Mickleburgh, Millennium Ecosystem Assessment, Muchhala, Nicolson, Olesen, Ollerton, Potts, Stuart, Sumner, Tittensor, Velthuis   +40 more
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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, Feng, Zhenyu, McGlinchey, Don, Nan, Yanghai, Peng, Bei   +4 more
core   +1 more source

Microbiome composition of Anna's hummingbirds differs among regions of the gastrointestinal tract

Journal of Avian Biology, 2022
The gastrointestinal (GI) microbiome is an important mediator and indicator of host physiology, health and fitness in many vertebrate systems, but sources of variation in microbiome composition within species are poorly understood, particularly in free ...
Rachel Dutch, Lisa A. Tell, Ruta Bandivadekar, Rachel L. Vannette   +3 more
doaj   +1 more source

Teleological Essentialism: Generalized [PDF]

, 2020
Natural/social kind essentialism is the view that natural kind categories, both living and non-living natural kinds, as well as social kinds (e.g., race, gender), are essentialized. On this view, artifactual kinds are not essentialized.
Keil F. C., Piaget J., Rose D., Rose D., Tobia K., Turri J.   +5 more
core   +1 more source

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, Morag F. Dick, Kenneth C. Welch   +2 more
doaj   +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, Thorsten Krömer, Luis F. Pacheco   +2 more
doaj   +1 more source