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Updated: Jul 12, 2026
06:14
A Method for Investigating Change Blindness in Pigeons (Columba Livia)
Published on: September 7, 2018
Summary
Pigeon navigation relies on the sun as a compass when available. However, pigeons can still navigate accurately without the sun or landmarks, indicating a redundant navigation system.
Area of Science:
- Animal Behavior
- Navigation and Orientation
- Ornithology
Background:
- Recent hypotheses emphasize the sun's role in pigeon homing.
- Some evidence suggests the sun may not be essential for pigeon navigation.
Purpose of the Study:
- To investigate the essentiality of the sun in pigeon homing.
- To examine the redundancy of pigeon navigation systems.
Main Methods:
- Releasing pigeons with experimentally shifted internal clocks (6 hours).
- Comparing vanishing bearings under sunny and overcast conditions.
- Testing navigation at unfamiliar release sites.
Main Results:
- Clock-shifted pigeons showed sun-compass-predicted deflections under sunny conditions.
- Under total overcast, both clock-shifted and control pigeons oriented homeward.
- No difference in orientation was observed between groups under overcast conditions, even at novel sites.
Conclusions:
- Pigeons use the sun as a compass when available.
- Pigeon navigation is redundant, enabling orientation without the sun or landmarks.
- Alternative orientational cues used in the absence of the sun do not require time compensation.
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