Results 91 to 100 of about 28,607 (286)

Effects of submergence on cardiac cycle and rate in aquatic and terrestrial birds

, 1961
Electrocardiograms were recorded for various aquatic and terrestrial birds with heads submerged and then returned to air. Instantaneous cardiac rates were calculated and P-R and Q-T intervals were measured at selected times. Bradycardia developed in all
Charles F. Bond, Steven D. Douglas, Perry W. Gilbert   +2 more
core   +1 more source

Diet of bird‐like troodontid dinosaurs: synthesis of a contentious clade

Biological Reviews, EarlyView.
ABSTRACT Troodontidae is a clade of small‐to medium‐sized maniraptoran theropods that mainly lived in Laurasia (modern Asia, North America and Europe) during the Jurassic and Cretaceous periods and are believed to have had a variety of diets. The uniqueness of troodontid teeth suggests that they diverged from the typical flesh‐based diet of non‐avian ...
Yui Chi Fan, Case Vincent Miller, Michael Pittman   +2 more
wiley   +1 more source

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

Biological Reviews, EarlyView.
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

In-air hearing of the great cormorant (Phalacrocorax carbo)

Biology Open, 2017
Many aquatic birds use sounds extensively for in-air communication. Regardless of this, we know very little about their hearing abilities. The in-air audiogram of a male adult great cormorant (Phalacrocorax carbo) was determined using psychophysical ...
Alyssa Maxwell, Kirstin Anderson Hansen, Sara Torres Ortiz, Ole Næsbye Larsen, Ursula Siebert, Magnus Wahlberg   +5 more
doaj   +1 more source

Flight of the dragons: a global review of migration in Odonata

Biological Reviews, EarlyView.
ABSTRACT Insects are the most abundant and ecologically important animal migrants. Yet, we know relatively little about the patterns and processes underlying insect migration. Dragonflies (Anisoptera) and damselflies (Zygoptera) comprise the ancient insect order Odonata, whose ancestors were the first organisms to fly on Earth.
Johanna S.U. Hedlund, Myles Menz, Jason W. Chapman, Alexander Hayward   +3 more
wiley   +1 more source

Comparative Study of Blood Volume in Representative Aquatic and Nonaquatic Birds

, 1958
Plasma volume (T-1824 dye method), hematocrit value, hemoglobin concentration and erythrocyte count were measured in several species of aquatic and nonaquatic birds, and from these data total blood and erythrocyte volumes were calculated.
Charles F. Bond, Perry W. Gilbert
core   +1 more source

Humans are not unique: difficult birth is common in placental mammals

Biological Reviews, EarlyView.
ABSTRACT Human childbirth is widely presumed to be uniquely difficult and dangerous compared to birth in other mammals. Tight fetopelvic proportions can result in obstructed labour and contribute to high rates of maternal and neonatal mortality. Ideas summarised under the ‘obstetrical dilemma’ have contributed to this assumption by explaining difficult
Nicole D. S. Grunstra
wiley   +1 more source

Waders in a sea of debris: a global overview

Biological Reviews, EarlyView.
ABSTRACT The impact of plastic pollution on ecosystems and marine fauna is well documented, although research into its effects on waders (also known as shorebirds) remains limited. Given that waders are exposed to coastal marine litter, this exposure could be a significant factor in the decline of their populations. This study aims to assess the global
Yada Trapletti‐Lanti, Mónica Expósito‐Granados, Elizabeth Znidersic, Marga L. Rivas   +3 more
wiley   +1 more source

VII. Remarks on the diving of aquatic birds [PDF]

The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science
n ...
openaire   +2 more sources

The surveillance and risk assessment of wild birds in northern Australia for highly pathogenic avian influenza H5N1 virus

, 2012
Highly pathogenic avian influenza (HPAI), caused by infection with H5N1 virus, is a transboundary disease which has had a significant socio-economic impact on the poultry production systems of Eurasia, and spillover events with mortality in humans and ...
Curran, John
core