1. Figure 2.1 Song dialects in white-crowned sparrows

2. Soha et al. 2004

3. Figure 2.2 Hearing is critically important for song learning in the zebra finch

4. Figure 2.3 Song learning hypothesis based on laboratory experiments with white-crowned sparrows

5. Figure 2.8 Changes in the song system of young male and female zebra finches

6. Gurney and Konishi 1980

7. Figure 2.13 The song system of a typical songbird

8. Figure 2.9 Timing of gene activity in different components of the avian song control system in males

9. Figure 2.10 Gene expression in a component of the zebra finch song system

10. Figure 2.11 A gene important in song learning by male zebra finches

11. Figure 2.14 Differences in the size of one nucleus of the song system

14. Figure 2.15 Single cells and song learning in the swamp sparrow

15. Figure 2.17 The song of a vocal non-learner, the eastern phoebe

16. Figure 2.16 The phylogeny of song learning in birds

17. Figure 2.18 The song control systems of parrots, hummingbirds, and oscine songbirds

18. Figure 2.19 Does bird song repel territorial intruders?

19. Figure 2.20 White-crowned sparrow females are attracted to songs of male white-crowned sparrows, not songs of other species

20. Figure 2.21 Songs match habitats

21. Figure 2.22 The songs sung by great tits differ in cities versus forests Original Paper

22. Figure 2.23 Two songs of the white crowned sparrow

23. Figure 2.24 Dialect selection by male white-crowned sparrows

24. Figure 2.25 Song type matching in the song sparrow

25. Figure 2.26 Song matching and communication of aggressive intent in the song sparrow

26. Figure 2.27 Evidence that male Cassin’s finches direct their songs at females

27. Figure 2.28 Nutritional stress early in life has large effects brain development and song learning

28. Figure 2.29 Mean number of precopulatory displays given by female song sparrows in response to playback of the songs of males

29. Figure 2.31 Measuring female preferences for different kinds of zebra finch songs