Results 71 to 80 of about 30,033 (263)
Hummingbird diversity, food niche characters, and assemblage composition along a latitudinal precipitation gradient in the Bolivian lowlands [PDF]
, 2018 As for many other taxa, hummingbird diversity declines away from the equator, but the causes for this decline are still disputed and might involve, among others, climatic factors or the availability of food resources.
Abrahamczyk, Stefan, Kessler, Michael
core
KLEIN: A New Family of Lightweight Block Ciphers [PDF]
, 2010 Resource-efficient cryptographic primitives become fundamental for realizing both security and efficiency in embedded systems like RFID tags and sensor nodes.
A. Bogdanov +39 more
core +6 more sources
Pollen essential amino acids shape bat–flower interaction networks
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Although pollen consumption by phytophagous bats has long been documented, the role of its protein and amino acid content in driving plant–pollinator interactions remains largely overlooked.
Fernando Gonçalves +4 more
wiley +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 +3 more
doaj +1 more source
Flight Performance and Competitive Displacement of Hummingbirds across Elevational Gradients [PDF]
, 2006 Hummingbirds, with their impressive flight ability and competitive aerial contests, make ideal candidates for applying a mechanistic approach to studying community structure.
Altshuler, Douglas L.
core +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant species pollinated by animals differ in the pool of visitors they attract. Some attract functionally similar animals, while others engage with a broader set of functionally distinct visitors; we term this species‐level variation functional generalism.
Ricardo Sánchez‐Martín +6 more
wiley +1 more source
Avian Conservation and Ecology, 2018 Most hummingbird species are distributed in tropical lowlands and mountains with few species reaching the alpine environments of high mountain peaks. Field surveys were conducted in nine alpine sites across four of the highest volcanoes in central Mexico
Libertad Arredondo-Amezcua +7 more
doaj +1 more source
Fall Field Report, August–November 2015 [PDF]
, 2015 To start, a housekeeping item: in the species accounts that follow, whenever I use the term migrant I am referring to fall migration only. Many species, of course, have differing migration strategies and timing in spring and fall. Much of the data used
Silcock, W. Ross
core +1 more source
Territorial Defense against Hummingbirds and Insects by Tropical Hummingbirds
The Condor, 1978 problems of observing them at close range and the variability of their behavior. Territorial hummingbirds are ideally suited for the study of time and energy budgets for the following reasons. (1) Their daily activities are usually quite localized. (2) They are not affected by the presence of a quiet observer and consequently can be observed at close ...
openaire +3 more sources
Constrained variation in the internal architecture of avian wing bones
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Extant birds exhibit remarkable ecological disparity accompanied by widespread skeletal convergence driven by functional adaptation. Investigations of morphofunctional associations with ecological factors have frequently focused on the external morphology of avian wing ...
Fabio Alfieri +4 more
wiley +1 more source