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en.wikipedia.org/wiki/Aquatic_respiration

Aquatic respiration is the process whereby an aquatic animal obtains oxygen from water. Contents. [hide]. 1 Respiratory systems. 1.1 Fish; 1.2 Molluscs; 1.3 Arthropods; 1.4 Aquatic reptiles; 1.5 Amphibians; 1.6 Aquatic birds ... Bony fish use countercurrent flow to maximize the intake of oxygen that can diffuse through the gill.

en.wikipedia.org/wiki/Common_raven_physiology

The common raven (Corvus corax), also known as the northern raven, is a large, all-black ... According to one study, species that consume only fruit possess lower ... To compensate for less ambient oxygen, common ravens undergo increased ..... During flight, birds can sustain their heart rates, and their myosin flight ...

asknature.org/strategy/air-flow-patterns-facilitate-efficient-gas-exchange

Jun 9, 2016 ... A breath of oxygen-rich inhaled air remains in the respiratory system for ... How do birds control the air so that it flows through their lungs when ...

en.engormix.com/poultry-industry/forums/forum-birds-need-oxygenated-t29407

Sep 11, 2012 ... Forum: Do birds need oxygenated water? ... Oxygen concentration in water is limited by its solubility: ... Oxygenated water gives better results in birds under heat stress by increasing oxygen, feed intake, weight gain & feed ...

www.coastal.edu/effect/audit/academic/faccomposer/1347218862_BIOL%20343%20%20Assigned%20paper%20Maina%202000%20Bat%20vs%20Bird.pdf

Key words: bird, bat, lung, flight, oxygen consumption, blood, hypoxia, haematocrit. ... turbulent air or when ascending, a bird can increase its V . O∑ for.

people.eku.edu/ritchisong/birdcirculatory.html

The cardiovascular system not only delivers oxygen to body cells (and removes metabolic ... 'Active' birds increase cardiac output primarily by increasing heart rate. ..... Antibodies (especially IgY) perform their function by attaching to disease .... due to inaccuracies in determining rates of oxygen consumption during diving.

people.eku.edu/ritchisong/birdmetabolism.html

The birds get their name from the unique circumstances surrounding their discovery by ... how much oxygen they consumed - to determine their basal metabolic rates. .... The compensation and increased-intake hypotheses predict that basal ... Prediction of how the energy and water requirements of endotherms should ...

www.livescience.com/55455-how-high-can-birds-fly.html

Jul 19, 2016 ... What allows high-flying birds to cruise at exceptional altitudes? ... The geese also hyperventilate to increase their oxygen intake while flying.

www.allaboutbirds.org/flying-on-fumes-how-birds-meet-their-oxygen-demands-at-high-altitude

Feb 23, 2017 ... Mountain climbers know the feeling of trying to perform at elevation. ... “They do it by increasing their oxygen transport with a greater number of ...