Results 31 to 40 of about 3,181 (180)
Validating accelerometry estimates of energy expenditure across behaviours using heart rate data in a free-living seabird [PDF]
, 2017 Two main techniques have dominated the field of ecological energetics, the heart-rate and doubly labelled water methods. Although well established, they are not without their weaknesses, namely expense, intrusiveness and lack of temporal resolution.
Bishop, Charles +5 more
core +2 more sources
The Effect of Breathing Oxygen and Air on Diving Bradycardia in Cormorants (Phalacrocorax Auritus) [PDF]
Journal of Experimental Biology, 1988 ABSTRACT Cardiovascular chemoreceptors are crucial for the development of forced diving responses in dabbling ducks such as the mallard (Anas platyrhynchos). Denervation of the peripheral chemoreceptors or allowing the duck to breath 100 % oxygen before a forced dive eliminates or considerably delays the onset of noticeable bradycardia ...
D R, Jones, S, Larigakis
openaire +2 more sources
Avian Conservation and Ecology, 2015 Canadian and U.S. federal wildlife agencies completed four decadal surveys, spanning the years 1977 to 2009, to census colonial waterbirds breeding on the Great Lakes and adjoining bodies of water.
Scott A. Rush +5 more
doaj +1 more source
PLoS ONE, 2020 Piscivorous avian species are the main source of catfish depredation at aquaculture facilities in Mississippi, resulting in the economic loss of millions of dollars every year.
Paul C Burr +4 more
doaj +1 more source
Presencia y abundancia de aves de la Isla Farallón de San Ignacio, Sinaloa
Huitzil, 2015 Para determinar la presencia y abundancia de aves que utilizan la isla Farallón de San Ignacio, Sinaloa, documentamos las aves observadas durante 46 visitas de cinco días a la isla entre 2003 y 2008. Registramos 57 especies de aves.
Miguel Angel Guevara Medina +2 more
doaj +1 more source
Avian Conservation and Ecology, 2021 Management of colonial waterbirds at regional, national, and continental scales requires up-to-date monitoring information on breeding locations, population sizes, and trends.
Ann E. McKellar +2 more
doaj
Molecular Ecology Resources, 2009 AbstractTwenty‐four polymorphic microsatellite markers were developed for the double‐crested cormorant (Phalacrocorax auritus). The number of alleles ranged from two to 13 and observed heterozygosities ranged from 0.032 to 0.871. The use of these loci should enable researchers and biologists to learn more about the population structure and ecology of ...
Fike, Jennifer A. +2 more
openaire +3 more sources
Isotopic ordering in eggshells reflects body temperatures and suggests differing thermophysiology in two Cretaceous dinosaurs [PDF]
, 2015 Our understanding of the evolutionary transitions leading to the modern endothermic state of birds and mammals is incomplete, partly because tools available to study the thermophysiology of extinct vertebrates are limited.
Cerling, Thure E. +13 more
core +3 more sources
Refinement of Biomarker Pentosidine Methodology for use on Aging Birds
Human-Wildlife Interactions, 2017 There is no reliable method for determining age for most species of long-lived birds. Recent success using the skin chemical pentosidine as a biomarker has shown promise as an aging tool for birds.
Crissa K. Cooey +5 more
doaj +1 more source