1. Five pigeons were trained to fly in a boundary-layer wind-tunnel at a velocity of 10 m s"1 for at least 10 min, and a number of respiratory and cardiovascular variables were recorded. For comparison, heart rate, respira-tory frequency and E.M.G. from the pectoralis major muscles were also recorded, using radio-telemetry, from free-flying pigeons. 2. For the flights in the wind tunnel there were immediate increases in respiratory frequency and heart rate upon take-off; these variables con-tinued to increase during the flight, eventually becoming on average 411 breaths min"1 (20 x resting) and 670 beats min"1 (6 x resting) respectively. There was a 1:1 relationship between ventilation and wing beat. Oxygen uptake and carbon ...
Flying birds often form flocks, with social1, navigational2 and anti-predator3 implications. Further...
Methods of observing birds in flight now include training them to fly under known conditions in wind...
We have observed that birds of several different taxa move their tails in conjunction with sound pro...
1. Two barnacle geese (Branta leucopsis) were successfully imprinted on a human and encouraged to fl...
Resting pigeons preheated to a stable core temperature of 43.2 ˚C, which is within the range of body...
The ability of racing pigeons to navigate and to find their way home is determined by many factors. ...
1. Clavicular air sac pressure, arterial blood gases and pH, and rectal temperature were measured in...
The metabolic costs of flight at a natural range of speeds were investigated in Rose Coloured Starli...
This item was digitized from a paper original and/or a microfilm copy. If you need higher-resolution...
The experimental method employed in an anechoic wind tunnel to characterize flow-induced noise of th...
A free-flying pigeon is capable of a variety of steady and unsteady states of flight, such as climbi...
properties of the pigeon supracoracoideus during different modes of flight (Article begins on next p...
1. Heart rate and respiratory frequency were recorded from free-range pochards and tufted ducks by u...
Recent studies on freely diving birds and mammals indicate that, contrary to the classical hypothesi...
Ventilatory control of the composition of the gases in the air sacs was studied during entry into fa...
Flying birds often form flocks, with social1, navigational2 and anti-predator3 implications. Further...
Methods of observing birds in flight now include training them to fly under known conditions in wind...
We have observed that birds of several different taxa move their tails in conjunction with sound pro...
1. Two barnacle geese (Branta leucopsis) were successfully imprinted on a human and encouraged to fl...
Resting pigeons preheated to a stable core temperature of 43.2 ˚C, which is within the range of body...
The ability of racing pigeons to navigate and to find their way home is determined by many factors. ...
1. Clavicular air sac pressure, arterial blood gases and pH, and rectal temperature were measured in...
The metabolic costs of flight at a natural range of speeds were investigated in Rose Coloured Starli...
This item was digitized from a paper original and/or a microfilm copy. If you need higher-resolution...
The experimental method employed in an anechoic wind tunnel to characterize flow-induced noise of th...
A free-flying pigeon is capable of a variety of steady and unsteady states of flight, such as climbi...
properties of the pigeon supracoracoideus during different modes of flight (Article begins on next p...
1. Heart rate and respiratory frequency were recorded from free-range pochards and tufted ducks by u...
Recent studies on freely diving birds and mammals indicate that, contrary to the classical hypothesi...
Ventilatory control of the composition of the gases in the air sacs was studied during entry into fa...
Flying birds often form flocks, with social1, navigational2 and anti-predator3 implications. Further...
Methods of observing birds in flight now include training them to fly under known conditions in wind...
We have observed that birds of several different taxa move their tails in conjunction with sound pro...