Sun Navigation in Homing Pigeons--Attempts to shift Sun Coordinates
نویسندگان
چکیده
منابع مشابه
Magnetic Fields and the Orientation of Homing Pigeons under Sun
Applying a magnetic field of o-1 Gs (1 gauss = io~*T) to the heads of pigeons homing from unfamiliar release sites significantly increased the scatter of the birds' vanishing bearings. A magnetic field of 0-3 gauss caused no difference between the orientation of birds wearing coils with either their north or south pole up. But a field of o-6 gauss (equal to that of the Earth) produced a small d...
متن کاملHoming Orientation in Pigeons in Relation to Opportunity to Observe the Sun before Release*
The aspect of the homing problem with which these experiments are concerned is the question of within how short a time birds are able to show homeward orientation after they are released in strange territory out of sight of familiar landmarks, and on what factors the speed of orientation depends. The sun navigation hypothesis which has been formulated by Matthews in various articles (e.g. 1951 ...
متن کاملSun-compass orientation in homing pigeons: compensation for different rates of change in azimuth?
Birds using their sun compass must compensate for the apparent movement of the sun with the help of their internal clock. The movement of the sun is not uniform, being much faster around noon than near sunrise and sunset. If the sun-compass mechanisms are not adjusted to these variations, considerable errors might arise. To learn whether birds are able to take the different rates of sun azimuth...
متن کاملSun compass-based spatial learning impaired in homing pigeons with hippocampal lesions.
The hippocampal formation is known to be critical for spatial cognition, for example, regulating the learning of environmental maps. But how is a spatial map learned, and what is the role of the hippocampal formation in the learning process? The sun compass is perhaps the most ubiquitous, naturally occurring spatial orientation mechanism found in the animal kingdom. The sun compass may also ser...
متن کاملOrientation by untrained pigeons requires the sun.
Untrained homing pigeons released on sunny days oriented homeward regardless of the direction of the release site from the loft. Similar pigeons released under total overcast vanished randomly, whereas experienced birds released on the same days at the same sites oriented homeward. Apparently untrained pigeons require the sun for orientation but experienced pigeons do not.
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 1971
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.54.2.291