Across
- 1. Orientation using the Sun's position, usually with time compensation from an internal clock.
- 3. Finding and maintaining a route towards a goal by using compass information, position information, or both.
- 5. A receptor that detects temperature or temperature change.
- 8. A receptor that detects chemical stimuli.
- 9. A non-directional movement response in which speed or turning rate changes with stimulus intensity.
- 10. A taxis in which an organism samples a stimulus successively from side to side to orient towards or away from its source.
- 12. A kinesis in which movement speed changes with stimulus intensity.
- 14. An innate directional movement response towards a favourable stimulus or away from an unfavourable one.
- 17. Directional movement towards or away from gravity.
- 18. A feature of Earth that can provide directional and positional information to animals able to detect it.
- 20. Orientation using the apparent positions or movement of stars.
Down
- 2. The ability to detect Earth's magnetic field and use it for orientation or navigation.
- 4. Directional movement towards or away from light.
- 6. A receptor that detects light.
- 7. Returning to a particular home site after travelling away from it, using one or more orientation or navigation cues.
- 8. Determining direction using a cue such as the Sun, stars or Earth's magnetic field; a compass gives direction but not position.
- 11. Directional movement towards or away from a chemical stimulus.
- 13. Regular, often seasonal, mass movement from one region to another and usually back again.
- 15. Light waves aligned mainly in one plane; sky polarisation patterns can help animals infer the Sun's position, including when it is obscured.
- 16. A kinesis in which the rate of turning changes with stimulus intensity.
- 19. Navigation using learned visual features of the landscape to determine position or find a route.