Results 11 to 20 of about 6,875 (169)
Vocal dimorphism in Anna's hummingbirds
Journal of Avian BiologySexual dimorphism in vocal signals is found across many bird species. By evaluating correlations among sex, behaviors, and vocalizations, the meaning and utility of sound production may be inferred.
Sierra Ru‐Yi Glassman +2 more
doaj +2 more sources
Journal of Pollination Ecology, 2021 In pollination systems with a diverse community of floral visitors, qualitative and quantitative variations in pollination effectiveness can lead to a system in which higher effectiveness results from the synergetic contribution of multiple pollinators ...
Santiago Cárdenas-Calle +7 more
doaj +1 more source
Floral resource availability of Dicliptera squarrosa (Acanthaceae) and its dependence on hummingbirds for fruit formation in a forest fragment of Central Brazil [PDF]
Plant Ecology and Evolution, 2019 Background and aims – Hummingbirds are dependent and specialized on nectar-feeding, and many plants depend upon them for pollination. However, the degree of plant-pollinator interdependence varies greatly among species; thus, information on plant mating ...
Raphael Matias +3 more
doaj +3 more sources
The foraging behaviour of hummingbirds through space and time [PDF]
, 2015 Central place foragers, such as territorial hummingbirds, feed from resources that tend to be constant in space and to replenish with time (e.g. nectar in flowers).
Tello Ramos, Maria Cristina
core +2 more sources
Visual Sensory Signals Dominate Tactile Cues during Docked Feeding in Hummingbirds
Frontiers in Neuroscience, 2017 Animals living in and interacting with natural environments must monitor and respond to changing conditions and unpredictable situations. Using information from multiple sensory systems allows them to modify their behavior in response to their dynamic ...
Benjamin Goller +4 more
doaj +1 more source
Current contrasting population trends among North American hummingbirds
Scientific Reports, 2021 As pollinators, hummingbirds play a critical role for both the function of ecological communities and in providing ecosystem services for people. To examine the conservation status of North American hummingbirds, we analyzed Breeding Bird Survey data for
Simon G. English +3 more
doaj +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
What hummingbirds can tell us about cognition in the wild. [PDF]
, 2013 Here we review around 20 years of experimental data that we have collected during tests of cognitive abilities of free-living, wild rufous hummingbirds Selasphorus rufus at their breeding grounds in southwestern Alberta.
Healy, Susan Denise +3 more
core +1 more source
What, where and when : deconstructing memory [PDF]
, 2013 This work was supported by the Natural Environment Research Council (DTG studentship to R.E.S.M.)The ability of animals to remember the what, where and when of a unique past event is used as an animal equivalent to human episodic memory.
Hurly, T.Andrew +4 more
core +1 more source
Female hummingbirds do not relocate rewards using colour cues [PDF]
, 2014 This research was supported by CONACYT (The Mexican National Council for Science and Technology) grant number: 310717, the University of Lethbridge and the Natural Sciences and Engineering Research Council of Canada (grant number: RGPIN 121496-2003) and ...
Healy, Susan D. +5 more
core +1 more source