Observation of a Brood of Sharp-Shinned Hawks in Ontario, with Comments on the Functions of Sexual Dimorphism (DjVu | PDF)
HELMUT C. MUELLER, NANCY S. MUELLER, PATRICIA G. PARKER ,  85-92

Food Deprivation and Temperature Regulation in Nestling Ferruginous Hawks (DjVu | PDF)
DIANA F. TOMBACK, JOSEPH R. MURPHY ,  92-97

Aerial "Play" of Black Vultures (DjVu | PDF)
WALTER A. THURBER ,  Page 97

The Shoulder-Spot Display in Ruffed Grouse (DjVu | PDF)
ALLAN GARBUTT ,  98-99

The Agonistic Repertoire of Sandhill Cranes (DjVu | PDF)
STEPHEN A. NESBITT, GEORGE W. ARCHIBALD ,  99-103

Notes on the Slender Antbird (DjVu | PDF)
EDWIN O. WILLIS, YOSHIKA ONIKI ,  103-107

Notes on the Uniform Crake in Costa Rica (DjVu | PDF)
F. G. STILES ,  107-108

Trichomoniasis in Bald Eagles (DjVu | PDF)
WARD B. STONE, PETER E. NYE ,  Page 109

Protocalliphora Infestation in Broad-Winged Hawks (DjVu | PDF)
SCOTT CROCOLL, JAMES W. PARKER ,  Page 110

Herring Gull Attacks and Eats Adult Male Oldsquaw (DjVu | PDF)
RICHARD R. SNELL ,  110-111

Red-Legged Kittiwakes Forage in Mixed-Species Flocks in Southeastern Alaska (DjVu | PDF)
DOUGLAS SIEGEL-CAUSEY, THOMAS E. MEEHAN ,  111-112

Ground-Feeding Methods Aud Niche Separation in Thrushes (DjVu | PDF)
ALAN TYE ,  112-114

American Coot Distribution and Migration in Colorado (DjVu | PDF)
WARNER P. GORENZEL, RONALD A. RYDER, CLAIT E. BRAUN ,  115-118

Reproductive Rate and Renesting of Red-Winged Blackbirds in Minnesota (DjVu | PDF)
DANIEL W. MOULTON ,  119-121

Migration Speeds of Three Waterfowl Species (DjVu | PDF)
FRANK C. BELLROSE, ROBERT C. CROMPTON ,  121-124