Fig. 4. A typical male wild-type zebra finch, showing the three regions for which reflectance was measured in Fig.3A: the red beak (approximately 8mm from base to tip), brown cheek patch and white region of the cheek.
Fig. 4. A typical male wild-type zebra finch, showing the three regions for which reflectance was measured in Fig.3A: the red beak (approximately 8mm from base to tip), brown cheek patch and white region of the cheek.