منابع مشابه
Simulating pigeon navigation
We present a computer model of avian navigation (homing) based on Kramer’s ‘Map and Compass’ model. The key assumptions are: (1) the navigation environment contains two intersecting gradients, (2) the birds possess senses to measure these gradients, a compass sense, and an internal representation of the gradients, the navigational ‘map’. By interpreting the difference in gradient values between...
متن کاملPigeon Navigation: Different Routes Lead to Frankfurt
BACKGROUND Tracks of pigeons homing to the Frankfurt loft revealed an odd phenomenon: whereas birds returning from the North approach their loft more or less directly in a broad front, pigeons returning from the South choose, from 25 km from home onward, either of two corridors, a direct one and one with a considerable detour to the West. This implies differences in the navigational process. ...
متن کاملAn edge-detection approach to investigating pigeon navigation.
This study brings together work in pattern recognition and animal behaviour. By applying algorithms in pattern recognition, we examined how visual landscape information influences pigeons' homing behaviour. We used an automated procedure (Canny edge detector) to extract edges from an aerial image of the experimental terrain. Analysis of pigeons' homing routes recorded using global positioning s...
متن کاملComputer Modelling of Pigeon Navigation according to the “Map and Compass”-Model
This paper presents a computer model of pigeon navigation (homing), based on Kramer’s map-and-compass model. The model makes the assumption that pigeons navigate in environments that contain at least two intersecting gradients which are used by the birds to determine the correct compass heading for home. By comparing the gradient values at the loft and at the release site, the simulated bird de...
متن کاملInvolvement of the Avian Dorsal Thalamic Nuclei in Homing Pigeon Navigation
The navigational ability of birds has been a focus of popular and scientific interest for centuries, but relatively little is known about the neuronal networks that support avian navigation. In the brain, regions like the piriform cortex, olfactory bulbs, hippocampal formation, vestibular nuclei, and the wulst, are among the brain regions often discussed as involved in avian navigation. However...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2005
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.01891