Structure and evolution of song form in the wrens Thryothorus sinaloa and T. felix R. Neil BrownR. E. Lemon OriginalPaper Pages: 111 - 131
Behavioral ecology of alpine yellow-bellied marmots Dennis W. JohnsKenneth B. Armitage OriginalPaper Pages: 133 - 157
Interspecific territoriality in red-breasted meadowlarks and a method for estimating the mutuality of their participation Michael Gochfeld OriginalPaper Pages: 159 - 170
Parental care and mating system of the prairie vole, Microtus ochrogaster Jeanette A. ThomasElmer C. Birney OriginalPaper Pages: 171 - 186
Insect disturbance stridulation: Its Defensive role W. Mitchell Masters OriginalPaper Pages: 187 - 200
Goal-oriented and compass-oriented movements of displaced homing pigeons after confinement in differentially shielded aviaries Hans G. Wallraff OriginalPaper Pages: 201 - 225