Cold Ruby-Throated Hummingbirds in Saskatchewan - May 2021
نویسندگان
چکیده
منابع مشابه
Optic flow stabilizes flight in ruby-throated hummingbirds.
Flying birds rely on visual cues for retinal image stabilization by negating rotation-induced optic flow, the motion of the visual panorama across the retina, through corrective eye and head movements. In combination with vestibular and proprioceptive feedback, birds may also use visual cues to stabilize their body during flight. Here, we test whether artificially induced wide-field motion gene...
متن کاملResource defense and monopolization in a marked population of ruby-throated hummingbirds (Archilochus colubris)
Resource defense behavior is often explained by the spatial and temporal distribution of resources. However, factors such as competition, habitat complexity, and individual space use may also affect the capacity of individuals to defend and monopolize resources. Yet, studies frequently focus on one or two factors, overlooking the complexity found in natural settings. Here, we addressed defense ...
متن کاملPremigratory ruby-throated hummingbirds, Archilochus colubris, exhibit multiple strategies for fuelling migration
http://dx.doi.org/10.1016/j.anbehav.2016.08.019 0003-3472/© 2016 Elsevier Ltd. All rights reserved. Many avian species fatten to fuel migratory flights. However, the amount of fat deposited prior to departure is variable depending on individual migration strategies. Despite their small size and high massspecific metabolic rates, migratory hummingbirds at isolated meadows can fatten up to 44% in...
متن کاملTemporal migration patterns between natal locations of ruby-throated hummingbirds (Archilochus colubris) and their Gulf Coast stopover site
Background Autumn latitudinal migrations generally exhibit one of two different temporal migration patterns: type 1 where southern populations migrate south before northern populations, or type 2 where northern populations overtake southern populations en route. The ruby-throated hummingbird (Archilochus colubris) is a species with an expansive breeding range, which allows opportunities to exam...
متن کاملBill Shape and Sexual Shape dimorphiSm Between two SpecieS of temperate hummingBirdS: Black-chinned hummingBird (Archilochus AlexAndri) and ruBy-throated hummingBird (A. colubris)
Resumen.—El dimorfismo sexual en el tamaño se presenta a través del reino animal, y sus causas e implicancias ecológicas y evolutivas han sido intensamente estudiadas. Las diferencias específicas de los sexos en la curvatura del pico son conocidas en varias especies des aves, incluyendo algunos picaflores tropicales. A pesar de la importancia de la forma del pico para forrajear, los estudios co...
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ژورنال
عنوان ژورنال: Blue jay
سال: 2022
ISSN: ['0006-5099', '2562-5667']
DOI: https://doi.org/10.29173/bluejay6344