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Graham R. Martin
Bird Senses
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Contents
Preface
A note on bird taxonomy and bird names
Acknowledgements
Chapter 1
Senses and sensory ecology
Unlocking the information
Sensory ecology
Key lessons from sensory ecology
Multiple information
Minimal information
This book
Chapter 2
Investigating senses
The origins of investigating senses
Epicurus and Sextus
Questions about senses: differences and dimensions
Describing sensory performance
Sensory thresholds
Relative sensitivity within a sense
Costs and trade-offs in senses
Trade-offs between senses
Trade-offs within a sense
A unique property of vision
Measuring senses
Animal psychophysics
Two-choice discrimination tasks
Training and testing
The uncertain threshold
Elaborating the task
A disconcerting experience
Measuring other sensory dimensions
Who, how, and what to measure?
Chapter 3
Vision in birds: the basics
The evolution of vision
The importance of vision in birds
What eyes do
Sources of variation in vision
Camera eyes
Sources of variation in camera eyes
The optical systems of camera eyes
Variation in image properties
The image analysis system
Photoreceptors: rods and cones
Sensitivity in the spectrum
Colour vision
Types of cone photoreceptors
Colour through birds’ eyes
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