r 
Short Communications 
603 Vocal repertoire of the Yellow-faced Parrot (Alipiopsitta xanthops) 
Carlos B. de Araujo, Luiz Octavio Marcondes-Machado, and Jacques M. E. Vielliard 
608 Plasma testosterone concentrations in adult Tree Swallows during the breeding season 
Molly Staley, Carol M. Vleck, and David Vleck 
613 First description of the breeding chronology of the White-collared Swift ( Streptoprocne zonaris) in Argentina 
julieta M. Passeggi 
618 Nesting of the Fulvous-breasted Flatbill (Rbynchocyclus fulvipectus) in southeastern Peru 
David Ocampo and Gustavo A. Londono 
624 Hourly laying patterns of the Pearly-eyed Thrasher {Margarops fiiscatus) in Puerto Rico 
Wayne J. Arenat 
628 First record of interspecific breeding of Least Bell’s Vireo and White-eyed Vireo 
Melissa A. Blundell and Barbara E. Kus 
632 Triorchidism in a hummingbird 
Christopher C. Witt and Emil Bautista 
633 Nest reuse by the Scintillam Hummingbird ( Selasphorus scintilla) 
Emilia Triana and Luis Sandoval 
638 Natal and adult dispersal of Red-eyed Vireos in a large southern Ontario forest 
Benjamin J. Walters and Erica Nol 
641 Evening nest-box departure times of Eastern Screech-Owls 
Werner G. Deuser 
646 Carrion-feeding by Barred Owls (Strix varia) 
Joshua M. Kapfer, David E. Gammon, and John D. Groves 
650 Ornithological Literature 
Robert B. Payne, Book Review Editor 
NUMBER 4 
Major Articles 
663 The extinct Wake Island Rail Gallirallus wakensis : a comprehensive species account based on museum 
specimens and archival records 
StorrsL. Olson and Mark J. Rauzon 
Mauro Galetti 
699 Effects of stop-level habitat change on Cerulean Warbler detections along Breeding Bird Survey routes in t e 
Strict MfrfcElhone. Petra Bohall. Wood, and Deanna K Dawson 
709 Fishery discards and incidental mortality of seabirds attending coastal shrimp trawlers at Isla Escondida, 
Patagonia, Argentina , 
Cristian Javier Marinao and Pablo Yorio . . . 
720 Gender assignment of Westland Petrels IProcelUria westlandiai) using linear discriminant firncron analysts 
Todd J. Landers, Todd E. Dennis, and Mark E. Hauber 
726 Sire dimorphism, juvcnal plumage, and timing of breeding of the Hyacinth Visorbearer [Augastes scutatus) 
LicUia Da Cruz Rodrigues and Marcos Rodrigues 
734 Morphometric variation and population tela* of Krhpefs Nuthatch (S,« W,e-f> - Turkey 
Tamer Albavrak, Aurelien Bcsnard. and Alt Erdogan 
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£- «—*ijtsyfsS:“ 
748 
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