Variation in the diet of Western Barn Owls (Tyto alba) along an urban-rural gradient 
Pablo Teta, Carina Hercolini, and Gerardo Cueto 
Short Communications 
Incidence of wing deformities (‘Angel Wing’) among Masked Boobies at Clipperton Island: life history 
consequences and insight into etiology 
Robert L. Pitman. Lisa 7. Ballanee, and Charles A. Bost 
' ^ eruv ’ an Pelicans ( Pelecanus thaws) attack and consume younger unrelated conspecifics 
Maximiliano Datgre, Paulina Arce, and Alejandro Simeone 
•Malicious motherhood: instance of infanticide by a female Barn Swallow 
Joanna K. Hubbard and Audrey L. Tobin 
i Intraspecific brood parasitism ot the Pale-breasted Thrush ( Turdus leucomelas) 
Iaulo V. Davanfo, Uvia M. S. Souza, Leonardo S. de Oliveira, and Mercival R. Francisco 
[estimation ol lernale home-range size during the nestling period of Dark-eyed Juncos 
Dustin G. Reichard and Ellen D. Ketterson 
'jOjcmeni and cover-type selection by fledgling Ovenbirds (Seiurus aurocapilla ) after independence from 
Henry M. Streby and David £ Andersen 
Asymmetries in mobbing behavior among nuclear flockmates 
Jason K. Courter and Gary Ritchison 
fastern Screech-Owl responses to suburban sprawl, warmer climate, and additional avian food in central 
Prederick R Gehlbacb 
"I Austral Pygmy Owl ( Glaucidiurn nana) in southern Chile 
nmUa V Norambuena and Andres Munoz-Pedreros 
! Raptor migration at Concepcidn, Bolivia 
Danas A. Jubant 
v7i an f°, U f mu ^'P^ e nests Calliope Hummingbird and Rufous Hummingbird 
1 “ tl ,e ^ er ’ Gigi Batchelder, Dale A. Livezey, and Jeffrey S. Marks 
'' Editorial News 
Ormtholog^al Literature 
Margaret A. Voss, Book Review Editor 
Annual Meetings of The Wilson Ornithological Society 
NUMBER 4 
Major Articles 
History. structure, evolution, behavior, distribution, and ecology of the extinct Hawaiian genus Ciridops 
nngillidae, Carduclini, Drepanidini) 
Stons L Olson 
^occurrence of'Omao in leeward woodland habitat and their distribution in alpine habitat on Hawau 
Island 
Seth W. Judge, Jacqueline M. Gaudioso, P. Marcos Gorresen, and Richard J. Camp 
Iwo modes of primary replacement during prebasic molt of Rufous Fantails, Rhipidura tujifions 
Janies H.Junda. Andrea L. Crary, and Peter Pyle 
,X Winter songs reveal geographic origin of three migratory seedeaters (Sporophila spp.) in southern neotropical 
grasslands 
Juan Ignacio Areta 
{i)H Identifying migratory pathways used by Rusty Blackbirds breeding in southcentral Alaska 
James A. Johnson, Steven M. Matsuoka. David F. Tessler, Russell Greenberg, and James W. tax 
0 | Migration routes and new breeding areas of Black-necked Cranes ,. , v , Y! lunYanv 
QiangLiu. Feng-Shan IA. Paul Buzzard. Fa-Wen Qian. Fan Zhang, Jian-Ltn ZhaoJun-Xmg yang. andXtao-Jun Yang 
713 Visual assessment of interbreeding by Aechmophorus grebes 
Andre Konter 
