510 
THE WILSON JOURNAL OF ORNITHOLOGY • Vol 124. No. 3. September 2012 
Nest cover (%) 
HO 1. Daily survival rate (DSR) of Red-crested Cardinal nests related to the percentage of cover above nesls in 
different periods of the breeding season (15 Oct: early nests, 1 Dec: half of the season, and 15 Jan: late nests). 
areas, and future studies should focus on this 
issue. We highlight the importance of microhab- 
itat nest concealment on nest success of Red- 
crested Cardinals, and suggest considering these 
patterns in future conservation and management 
of this species’ natural populations, as well as 
other bird species with similar life-history traits. 
ACKNOWLEDGMENTS 
w c are grateful to Luis del Sotlo and Emiliano Torres I 
allow ing us to conduct this study in Estancia l.a Madid, 
We thank Facundo D. Sallo. Facundo Gandoy. Emilia 
Depino, R. E. McNutt. Danielle Castle. S. A. Fee, Kathle 
Masterson. A. E. Formoso. D. I Isaldo, R. F. Jensen. Tobi 
Mika. R. H. Crandall. M. M, Kalamaras. Rachel Buxtc 
Amy Nixon. Leigh Marshall. Y. S. Obed, and M. . 
Diferdmando for help in data Collection and nest monitc 
mg We are also grateful to M. C. Dc Mars.co and Ig 
Berkunsky for helpful suggestions about Program MAR 
Ne thank iwo anonymous reviewers for helpful cummer 
on a previous version of this manuscript. LNS w 
Inveof h> a fell ? wshi P Consejo Nacional , 
L ' “ auo,lcs Cientificas y Tecnicas (CONICET). 
LITERATURE CITED 
AST.fi, A. A. AND J. C. Rrboreda. 2006. Costs of 
punaures and Shiny Cowhird parasitism on cl 
bUl.al Thrush reproductive success. Auk 123:23- 
Bechard. M. J. 10X2. Effect of vegetative cover on 
foraging site selection by Swainson's Hawk. Condor 
84:153—159. 
Burnham. K. P, and D. R. Anderson. 2002. Model selection 
and multimodel inference: a practical infonnaliun- 
ihcorctic approach. .Springer-Verlag. New York. USA. 
Burnham, k. P. and D. R. Anderson. 2004. Multi model 
inference. Understanding AIC anil BIC in model selection. 
Sociological Methods and Research 33:261-304. 
Bi khans. D. E.. D. Dearborn. F. R. Thompson III. and .’ 
Faahokg. 2002. Factors affecting predation at ^1" 
bird nests in old fields. Journal of Wildlife Manage¬ 
ment 66:240-249. 
DAvalOS- L. M. \nd A. L. Porzecanski. 2009. Aecounl- 
ing for molecular stochaxticily in systematic revisions: 
species limits and phylogeny of Paroaria. Molecular 
Phylogenetics and Evolution 53:234-248. 
Deliiey, K.. M. Carrko, L. C. Vernik re. B Mahler, anp a 
Pi rr.RS. 2010. Seasonal variation in reproductive outputs 
a neotropical temperate suboscine. the Firewood-gatherer 
(Anumhius armumbi). Auk 127:222-231. 
Dt-. Marsico. M. C. and J. C. Reboreda. 2010. Bn«xl 
parasitism increases mortality of Bay-winged Cow bird 
nests. Condor 112:407-417. 
Dt Giacomo. A. G.. A. S. Dt Giacomo, and J. C Reborh>a- 
2011. Male and female reproductive success m •> 
threatened polygynous species: the Strange-tailed 
Lyrant. Alectrurus risora. Condor 1 13:619-628. 
Dinsmore. S. J.. g. c. White, and F. L. Knopf. 2002 
Advanced techniques for modeling avian nest survival 
Ecology 83:3476-3488. 
