1. Maternal state affects intestinal changes of rat pups at weaning

   • M. Gomendio
   • J. Cassinello
   • M. W. Smith

   OriginalPaper Pages: 71 - 80

2. Pair and extra-pair mating success relative to male quality in red-winged blackbirds

   • P. J. Weatherhead
   • P. T. Boag

   OriginalPaper Pages: 81 - 91

3. Costs of switching social groups for dominant and subordinate dark-eyed juncos (Junco hyemalis)

   • Daniel A. Cristoll

   OriginalPaper Pages: 93 - 101

4. High paternal investment in unrelated young: extra-pair paternity and male parental care in house martins

   • L. A. Whittingham
   • J. T. Lifjeld

   OriginalPaper Pages: 103 - 108

5. Responses of song sparrows to song-type matching via interactive playback

   • Bonnie M. B. Nielsen
   • Sandra L. Vehrencamp

   OriginalPaper Pages: 109 - 117

6. Individual recognition of song repertoires in two wood warblers

   • R. Godard
   • R. H. Wiley

   OriginalPaper Pages: 119 - 123

7. Carbohydrate and calling: Depletion of muscle glycogen and the chorusing dynamics of the neotropical treefrog Hyla microcephala

   • J. J. Schwartz
   • S. J. Ressel
   • C. R. Bevier

   OriginalPaper Pages: 125 - 135

8. Mating system of the cooperatively breeding noisy miner Manorina melanocephala, as revealed by DNA profiling

   • Tarmo Põldmaa
   • Robert Montgomerie
   • Peter Boag

   OriginalPaper Pages: 137 - 143