Results 121 to 130 of about 2,929 (187)

Field Metabolic Rate and Food Consumption of Two Sympatric Hummingbird Species in Southeastern Arizona

open access: yes, 1994
We compared the field metabolic rate (FMR) and behavior around sugar-water feeders of sympatric territorial and non-territorial hummingbirds in the Chiricahua Mountains of southeastern Arizona during July 1987 and 1989.
Conley, Timothy M, Powers, Donald R
core   +1 more source

Field treatment of American foulbrood in honey bees [PDF]

open access: yes, 2011
Typescript etc.Digitized by Kansas State University ...
Garner, John Forrest
core  

Specific ant-pollination in an alpine orchid and the role of floral scent in attracting pollinating ants [PDF]

open access: yes, 2018
Several studies have recently shown that floral scent can deter ants from flowers. However, when ants serve as reliable pollen vectors, for example in harsh, windy habitats, were flying insects are less active, plants should have evolved floral signals ...
Glaser, Florian, Schiestl, Florian
core  

4-H Beekeepers' Club [PDF]

open access: yes, 1939
February, 1939."Cooperative Extension Work in Agriculture and Home Economics, University of Missouri, College of Agriculture and the United States Department of Agriculture cooperating."Title from ...
Jones, G. D. (George D.)   +1 more
core  

The Impact of Social Interactions on Torpor Use in Hummingbirds

open access: yes, 2004
Measurements of metabolic rate and fat deposition were made on a three-species hummingbird guild in southeastern Arizona to determine if the energetic advantage gained by a dominant territorial species (Lampornis clemenciae) over subordinate competitors (
Powers, Donald R.
core  

Influence of Honey Bee, Apis mellifera, Hives and Field Size on Foraging Activity of Native Bee Species in Pumpkin Fields [PDF]

open access: yes, 2017
The purpose of this study was to identify bee species active in pumpkin fields in New York and to estimate their potential as pollinators by examining their foraging activity.
Artz, Derek R.   +2 more
core  

Bacterial Communities in Central European Bumblebees: Low Diversity and High Specificity [PDF]

open access: yes, 2018
Recent studies on the microbial flora of the honeybee gut have revealed an apparently highly specific community of resident bacteria that might play a role in immune defence and food preservation for their hosts. However, at present, very little is known
Koch, Hauke, Schmid-Hempel, Paul
core  

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