INDEX 



Nidification, dates of, Chiff-chaff, xii, 15. 



, task of, Chiff-chaff, xii, 13. 



Nightingale, non-imitative powers, xxi, 55. 



nisoria, Sylvia, vi, 1. 



Note, alarm, of young Blackcap, iv, 26, 27; of parent Blackcap, iv, 27. 



, Garden Warbler, v, 7. 



, Whitethroat, i, 17, 22. 



, young Lesser Whitethroat, ii, 8. 



call, young Blackcap, iv, 27. 



hissing, of male Lesser Whitethroat, ii, 7. 



mating, Blackcap, iv, 19. 



purring of male Whitethroat, i, 13. 



uttered during sexual activity, Wood Warbler, xv, 14. 

 Notes, call, Blackcap, iv, 12. 



— — -, -, Garden Warbler, v, 20. 



, Dartford Warbler, viii, 6. 



, metallic, Reed Warbler, xx, 6. 



of female Chiff-chaff, xii, 14. 



of young Garden Warbler, v, 17. 



, purring, Garden Warbler, v, 11, 15. 



, , Willow Warbler, xiv, 12. 



, Savi's Warbler, xxvi, 6; Hawfinch, xxvi, 6. 



• — ■ — , unusual of male and female Blackcap, iv, 15. 

 , young birds', Marsh Warbler, xxi, 54. 



Organic response of young, Reed Warbler, xx, 51. 



symptoms, Marsh Warbler, xxi, 10. 



of emotion, Marsh Warbler, xxi, 65. 



orphea, Sylvia, iii, 1. 



Orphean Warbler, iii, 1. 



Orpheus- Grasmucke , iii, 1. 



orpheus, Sylvia, iii, 1. 



Ovaries, advanced development of, Chiff-chaff, xii, 16. 



, development of, Garden Warbler, v, 10. 



Pagliarola, xxiv, 1. 



Pairing for life, Willow Warbler, xiv, 9. 



Pairing-hunger of the female (Summary), 9. 



, Garden Warbler, v, 10. 



Pairing impulse of the female, Marsh Warbler, xxi, 61. 



, Reed Warbler, xx, 23. 



, song deteriorates after, Blackcap, iv, 21. 



Pallas' Willow Warbler, x, 1. 

 palustris, Acrocephalus, xxi, 1. 



, Calamoherpe, xxi, 1. 



Papa amoras, xii, 1. 



Parental affection, Reed Warbler, xx, 21. 



care, cessation of, Whitethroat, i, 22. 



duties, Reed Warbler, xx, 4. 



21 



