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Wardrop, S. L., and R. C. Ydenberg.  2003.  Date and parental quality effects in the seasonal decline in reproductive performance of  
         the tree swallow
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         sewage and pulp-mill effluents. Can. J. Zool. 79:5-15.
Weatherhead, P. J.  1984.  Fecal sac removal by tree swallows: The cost of cleanliness. Condor 86:187-191.
Weatherhead, P. J.  1988.  Adaptive disposal of fecal sacs. Condor 90:518-519.
Weatherhead, P. J., S. G. Sealy, and R. M. R. Barclay.  1985.  Risks of clustering in thermally-stressed swallows. Condor                
         87:443-444.
Weatherhead, P. J., and S. M. Yezerinac.  1998.  Breeding synchrony and extra-pair mating in birds. Behav. Ecol. Sociobiol.             
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Wheelwright, N. T., and F. B. Dorsey.  1991.  Short-term and long-term consequences of predator avoidance by tree swallows         
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Wheelwright, N. T., J. Leary, and C. Fitzgerald.  1991.  The costs of reproduction in tree swallows. Can J. Zool. 69:2540-2547.
Wheelwright, N. T., and C. B. Schultz.  1994.  Age and reproduction in savannah sparrows and tree swallows. J. Anim. Ecol.           
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Whittingham, L. A., and P. O. Dunn.  2001.  Females' responses to intraspecific brood parasitism in the tree swallow. Condor           
         103:166-170.
Whittingham, L. A., and P. O. Dunn.  2001.  Survival of extrapair and within-pair young in tree swallows. Behav. Ecol. 12:496-500.
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         Anim. Behav. 47:994-997.
Whittingham, L. A., P. O. Dunn, and R. J. Robertson.  1995.  Do males exchange feathers for copulations in tree swallows? Auk      
         112:1079-1080.
Whittingham, L. A., P. O. Dunn, and R. J. Robertson.  1995.  Testing the female mate-guarding hypothesis: a reply. Anim. Behav.     
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Whittingham, L. A., and H. Schwabl.  2002.  Maternal testosterone in tree swallow eggs varies with female aggression. Anim. Behav.
         63:63-67.
Whittingham, L. A., B. Slikas, D. W. Winkler, and F. H. Sheldon.  2002.  Phylogeny of the tree swallow genus, Tachycineta (Aves:   
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Wiggins, D. A.  1989.  Heritability of body size in cross-fostered tree swallow broods. Evolution 43:1808-1811.
Wiggins, D. A.  1990.  Food availability, growth, and heritability of body size in nestling tree swallows (
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Wiggins, D. A.  1990.  Clutch size, offspring quality, and female survival in tree swallows - an experiment. Condor 92:534-537.
Wiggins, D. A.  1991.  Natural selection on body size and laying date in the tree swallow. Evolution 45:1169-1174.
Wiggins, D. A., and T. Part.  1995.  Sexual dimorphism and breeding success in tree swallows and collared flycatchers. Condor        
         97:267-271.
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Winkler, D. W.  1992.  Causes and consequences of variation in parental defense behavior by tree swallows. Condor 94:502-520.
Winkler, D. W.  1993.  Use and importance of feathers as nest lining in tree swallows (
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Winkler, D. W.  2000.  The phylogenetic approach to avian life histories: an important complement to within-population studies.         
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Winkler. D. W., and P. E. Allen.  1995.  Effects of handicapping on female condition and reproduction in tree swallows (
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Winkler, D. W., and P. E. Allen.  1996.  The seasonal decline in tree swallow clutch size: Physiological constraint or strategic            
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Winkler, D. W., P. O. Dunn, and C. E. McCulloch.  2002.  Predicting the effects of climate change on avian life-history traits. Proc.  
         Nat. Acad. Sci. 99:13595-13599.
Winkler, D. W., and F. H. Sheldon.  1993.  Evolution of nest construction in swallows (Hirundinidae): A molecular phylogenetic        
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Winkler, D. W., P. H. Wrege, P. E. Allen, T. L. Kast, P. Senesac, M. F. Wasson, P. E. Llambias, V. Ferretti, and P. J. Sullivan.        
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Winkler, D. W., P. H. Wrege, P. E. Allen, T. L. Kast, P. Senesac, M. F. Wasson, and P. J. Sullivan.  2005.  The natal dispersal of     
         tree swallows in a continuous mainland environment. J. Anim. Ecol. 74:1080-1090.
Zach, R.  1982.  Hatching, asynchrony, egg size, growth, and fledging in tree swallows. Auk 99:695-700.
Zach, R., and K. R. Mayoh.  1982.  Weight and feather growth of nestling tree swallows. Can. J. Zool. 60:1080-1090.
Zach, R., and K. R. Mayoh.  1986.  Gamma irradiation of tree swallow embryos and subsequent growth and survival. Condor           
         88:1-10.
Zack, S., and B. J. Stutchbury.  1992.  Delayed breeding in avian social systems: the role of territory quality and "floater" tactics.       
         Behav. 123:194-219.

                                                                                        
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TREE SWALLOW RESEARCH BIBLIOGRAPHY
(Last Updated 01/05/2008)
Most articles below use Tree Swallows as the primary study species.  Some use Tree Swallows as a
comparison species or as one of a group of species being investigated.
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