Results 41 to 50 of about 4,493 (133)

Mixed‐vertebrate pollination traits and pollinators of Haageocereus acranthus (Cactaceae) in a lomas desert ecosystem of coastal Peru

Plant Biology, EarlyView.
In a lomas desert ecosystem of coastal Peru, the columnar cactus Haageocereus acranthus shows traits and interactions consistent with a mixed‐vertebrate pollination system (hummingbirds and bats), with no detectable differences between flower colour morphotypes in either traits or interactions.
B. Garcia‐Simpson, B. A. Prado, J. J. Pellón, A. Valiente‐Banuet   +3 more
wiley   +1 more source

The nest and eggs of the Rufous-shafted Woodstar Chaetocercus jourdanii andinus, with a review on the breeding data for the genus

El Hornero
Egg collections represent a critical, though underutilized, source of sensitive biological data about a substantial proportion of avian taxa, and can help expand our knowledge of avian natural history and general biology.
Vladislav Marcuk, Harold F. Greeney, Pascal Eckhoff   +2 more
doaj   +1 more source

Are hummingbirds generalists or specialists? Using network analysis to explore the mechanisms influencing their interaction with nectar resources.

PLoS ONE, 2019
Mutualistic interactions are powerful drivers of biodiversity on Earth that can be represented as complex interaction networks that vary in connection pattern and intensity.
Claudia I Rodríguez-Flores, Juan Francisco Ornelas, Susan Wethington, María Del Coro Arizmendi   +3 more
doaj   +1 more source

Floral intra‐individual variation differs between morphs and is linked to pollen deposition in self‐incompatible distylous plants

Plant Biology, EarlyView.
For most traits, floral intra‐individual variation was similar between morphs and populations with different pollinator guilds (bees and hummingbirds), potentially facilitating effective pollen transfer in distylous systems. Still, greater variation in corolla length increased pollen deposition in L‐morph flowers in the bee‐pollinated population ...
R. Trevizan, V. Ferrero, F. Telles, L. Oliveira, L. Melo, F. W. Amorim, P. E. Oliveira   +6 more
wiley   +1 more source

Phoretic mites (Rhinoseius spp.) in Apodiformes from Cerrado and Pantanal Biomes in midwestern Brazil [PDF]

Brazilian Journal of Biology, 2019
Nasal mites are commonly found in hummingbirds (Apodiformes). In most cases, endoparasitic mites were reported to parasitize the respiratory system, particularly the anterior nasal chambers, larynx, trachea, lungs, and the air and conjunctival sacs ...
D. G. S. Ramos, C. S. Mascarenhas, Í. A. Braga, A. L. T. Melo, P. G. Oliveira, K. C. Saturnino, A. L. Sinkoc, D. M. Aguiar, R. C. Pacheco   +8 more
doaj   +2 more sources

Osteological correlates of the respiratory and vascular systems in the neural canals of Mesozoic ornithurines Ichthyornis and Janavis

The Anatomical Record, Volume 309, Issue 10, Page 2725-2738, October 2026.
Abstract In birds, the neural canal houses a variety of anatomical structures including the spinal cord, meninges, spinal vasculature, and respiratory diverticula. Among these, paramedullary diverticula and the extradural dorsal spinal vein may leave behind osteological correlates in the form of pneumatic foramina and fossae, and a bilobed geometry of ...
Jessie Atterholt, M. Grace Burton, Mathew J. Wedel, Juan Benito, Ellen Fricano, Daniel J. Field   +5 more
wiley   +1 more source

Vocal dimorphism in Anna's hummingbirds

Journal of Avian Biology
Sexual 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, Adi Domer, Robert Dudley   +2 more
doaj   +1 more source

Concentrations of Retinol and α-Tocopherol in Tissue Samples From Anna's Hummingbirds (Calypte anna)

Frontiers in Veterinary Science, 2020
Retinol (vitamin A) and α-tocopherol (vitamin E) concentrations were measured in tissue samples (liver, heart, pectoral muscle, and brain) from Anna's Hummingbirds (Calypte anna).
Stephanie M. Diao, Robert H. Poppenga, Gwendolyne Gonzales Alarcio, Janet E. Foley, Ruta R. Bandivadekar, Linda S. Aston, Lisa A. Tell   +6 more
doaj   +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, Lisa A. Tell, Ruta Bandivadekar, Rachel L. Vannette   +3 more
doaj   +1 more source

How wildlife respond to tropical cyclones: short‐term tactics and long‐term impacts

Biological Reviews, Volume 101, Issue 5, Page 2081-2102, October 2026.
ABSTRACT From butterflies to lizards and from sharks to seabirds, wildlife exhibit tactics to survive the impacts of tropical cyclones, also known as hurricanes, cyclones, or typhoons depending on where they occur. Some species seek refuge during the storm by moving, some remain in place and ride it out, and others move longer distances, avoiding the ...
Erin L. Koen, Mohamed Khalil Meliane, Zachery B. Holmes, Karl E. Miller, William J. Barichivich, Emilie Dedeban, Alex Furst, Miranda Imeri, Peyton E. Niebanck, Samantha Nunn, Kailee Pearson, Nicole Rita, Brier Ryver, Dakotah Shaffer, Susan C. Walls, E. Hance Ellington   +15 more
wiley   +1 more source