Results 1 to 10 of about 2,940 (117)

Metabolic Fates of Evening Crop-Stored Sugar in Ruby-Throated Hummingbirds (Archilochus colubris)

open access: yesDiversity, 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 ...
Kenneth C Welch   +2 more
exaly   +3 more sources

Evaluation of minimally invasive sampling methods for detecting Avipoxvirus: Hummingbirds as a case example

open access: yesFrontiers in Veterinary Science, 2022
Avian pox is a common avian virus that in its cutaneous form can cause characteristic lesions on a bird's dermal surfaces. Detection of avian pox in free-ranging birds historically relied on observations of visual lesions and/or histopathology, both ...
Aoife N. Galvin   +10 more
doaj   +1 more source

Computer vision analysis to identify episodic flapping in hovering hummingbirds [PDF]

open access: yesBiology Open
Maria Ximena Bastidas-Rodriguez   +10 more
doaj   +2 more sources

Hummingbird ingestion of low-concentration ethanol within artificial nectar

open access: yesRoyal Society Open Science, 2023
Both frugivores and nectarivores are potentially exposed to dietary ethanol produced by fermentative yeasts which metabolize sugars. Some nectarivorous mammals exhibit a preference for low-concentration ethanol solutions compared to controls of ...
Julia Choi   +6 more
doaj   +1 more source

Hovering in the heat: effects of environmental temperature on heat regulation in foraging hummingbirds [PDF]

open access: yesRoyal Society Open Science, 2017
At high temperature (greater than 40°C) endotherms experience reduced passive heat dissipation (radiation, conduction and convection) and increased reliance on evaporative heat loss.
Donald R. Powers   +5 more
doaj   +1 more source

Hummingbird foraging preferences during extreme heat events

open access: yesEcology and Evolution, 2023
Climate change is projected to increase global mean annual temperatures as well as the frequency and intensity of extreme heat events. These changes are anticipated to alter the behavior of animals as they seek to thermoregulate in extreme heat.
Sabina Lucke Lawrence, Jenny Hazlehurst
doaj   +1 more source

Aspect Ratio Effects on the Aerodynamic Performance of a Biomimetic Hummingbird Wing in Flapping

open access: yesBiomimetics, 2023
Hummingbirds are flapping winged creatures with unique flight mechanisms. Their flight pattern is more similar to insects than other birds. Because their flight pattern provides a large lift force at a very small scale, hummingbirds can remain hovering ...
Yilong Min   +3 more
doaj   +1 more source

Comparative chromosome painting in hummingbirds (Trochilidae) [PDF]

open access: yesGenetics and Molecular Biology, 2020
Hummingbirds (Trochilidae) are one of the most enigmatic avian groups, and also among the most diverse, with approximately 360 recognized species in 106 genera, of which 43 are monotypic.
Tiago Marafiga Degrandi   +9 more
doaj   +1 more source

Dying for love: Illegal international trade in hummingbird love charms

open access: yesConservation Science and Practice, 2022
Hummingbirds (family Trochilidae) are among the most recognizable groups of birds, due to their tiny size, supremely maneuverable flight, and iridescent plumage.
Pepper W. Trail
doaj   +1 more source

Retrospective study on admission trends of Californian hummingbirds found in urban habitats (1991–2016) [PDF]

open access: yesPeerJ, 2021
Background Hummingbirds are frequently presented to California wildlife rehabilitation centers for medical care, accounting for approximately 5% of overall admissions.
Pranav S. Pandit   +11 more
doaj   +2 more sources

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