Publications

2010 - Safran, R.  Barn Swallows: Sexual and Social Behavior.  In: Breed M.D. and Moore J., (eds)  Encyclopedia of Animal Behavior, volume 1, pp. 139-144.  Oxford Academic Press.     PDF


2010 - Dor, R., R.J. Safran, F.H. Sheldon, D.W. Winkler, and I.J. Lovette. Phylogeny of the genus Hirundo and the Barn Swallow subspecies complex.  Molecular Phylogenetics and Evolution 56: 409-418.   PDF


2010 - Hubbard, J, Uy, J.A.C., Hauber, M.E. Hoekstra, H.E., and Safran, R.J. Vertebrate Pigmentation: From Genes to Adaptive Function. Trends in Genetics 26: 231-239. Featured with the cover photo     PDF


2010 - Maguire, S.E. and R.J. Safran.  Paternity, ornamentation and patterns of parental care in the North American barn swallow. Journal of Avian Biology 41: 74-82.    PDF


2010 - Safran, R.J., M.N. Vitousek, M.E. Hauber, C.K. Ghalambor. 2010. Sexual selection: a dynamic state of affairs - Response to the comments of Cornwallis and Uller in the article: Towards and evolutionary ecology of sexual traits.  Trends in Ecology and Evolution 25: 429-430.   PDF


2010 - Safran, R.J., K.J. McGraw, K.M. Pilz, S.M. Correa. 2010. Egg-yolk androgen and carotenoid deposition as a function of maternal social environment in barn swallows Hirundo rustica.  Journal of Avian Biology 41: 470-478.   PDF


2010 - Safran, R.J., K.J. McGraw, M.R. Wilkins, J.K. Hubbard, and J. Marling. 2010. Positive antioxidant balance over the breeding season predicts reproductive performance in a wild bird.  PLoS ONE 5(2) e9420.   PDF


2009 - Tibbetts, E.A., and R.J. Safran*. Co-evolution of Badges of Status and Winter Sociality in New and Old World Sparrows. Journal of Evolutionary Biology 22: 2376-2386. * Both authors contributed equally. Featured with the cover photo   PDF


2008 - Safran and Vitousek.  Evolutionary Biology: Arms races in the eye of the beholder.  Current Biology 18(17): 734-736.   PDF

2008 - Safran, Adelman, McGraw, and Hau.  Sexual signal exaggeration affects physiological state in male barn swallows.  Current Biology 18(11): 461-462.     PDF

2008 - Safran, Pilz, McGraw, Correa, Schwabl.  Are yolk androgens and carotenoids in barn swallow eggs related to parental quality?  Behav. Ecol. Sociobiol.     PDF

2007 - Doerr, Doerr, and Safran.  Integrating delayed dispersal into broader concepts of social group formation.  Behavioral Processes 76: 114-117.     PDF

2007 - Neuman, Safran, and Lovette.  Male tale streamer length does not predict apparent or genetic reproductive success in North American barn swallows Hirundo rustica erythrogaster.  Journal of Avian Biology 38: 28-36     PDF

2007 - Safran, Doerr, Sherman, Doerr, Flaxman, and Winkler.  Group breeding in vertebrates: linking individual and population-level approaches.  Evolutionary Ecology Research 9: 1163-1185.     PDF

2007 - Safran and Hauber.  Evolutionary biology: variation isn’t always sexy.  Current Biology 17(10): 368-370.     PDF

2007 - Safran.  Settlement patterns of female barn swallows Hirundo rustica across different group sizes: access to colorful males or favored nests?  Behav. Ecol. Sociobiol. 61: 1359-1368.     PDF

2006 - Safran, Nest site selection in the barn swallow, Hirundo rustica: What predicts seasonal reproductive success?  Canadian Journal of Zoology 84: 1533-1539.    PDF

2006 - Hauber and Safran. Behavioural ecology: promiscuous fathers sire young that recognize true family.  Current Biology 16(18): 797-800.     PDF

2005 - McGraw, Safran, and Wakamatsu.  How feather color reflects its melanin content.  Functional Ecology 19: 816-821.     PDF

2005 - Safran, Neuman, McGraw, and Lovette.  Dynamic pattern allocation as a function of male plumage color in barn swallows.  Science 309: 2210-2212       featured with the cover photo    supplemental material.

2004 - McGraw, Wakamatsu, Ito, Nolan, Jouventin, Dobson, Austic, Safran, Siefferman, Hill, and Parker.  You can’t judge a pigment by its color: carotenoid and melanin content of yellow and brown feathers in swallows, bluebirds, penguins, and domestic chickens.  The Condor 106: 390-395.     PDF

2004 - McGraw, Safran, Evans, and Wakamatsu.  European barn swallows use melanin pigments to color their feathers brown.  Behavioral Ecology 15(5); 889-891.     PDF

2004 - Safran.  Adaptive site selection rules and variation in group size of barn swallows: individual decisions predict population patterns.  The American Naturalist 164(2): 121-131.     PDF

2004 - Safran and McGraw.  Plumage coloration, not length or symmetry of tail-streamers, is a sexually selected trait in North American barn swallows.  Behavioral Ecology 15(3): 455-461.     PDF

2002 - Taft, Colwell, Isola, and Safran.  Waterbird responses to experimental drawdown: implications for the multispecies management of wetland mosaics.  Journal of Applied Ecology 39: 987-1001.     PDF

2002 - Safran.  A review of bird nests and construction behavior.  Auk 119: 892-894.

2000 - Isola, Colwell, Taft, and Safran.  Interspecific differences in habitat use of shorebirds and waterfowl foraging in managed wetlands of California’s San Joaquin Valley.  Waterbirds 23: 196-203.     PDF

2000 - Safran, Colwell, Isola, and Taft.  Foraging site selection by white-faced Ibis.  The Condor 102: 211-215.     PDF

1997 - Safran, Isola, Colwell, and Williams.  Benthic invertrebrates at foraging locations of nine waterbird species in managed wetlands of the northern San Joaquin Valley, California.  Wetlands 17: 407-415.

1996 - Shuford, Hickey, Safran, and Page.  A review of the status of the White-faced Ibis in winter in California.  Western Birds 27: 169-196.

Behavioral and Evolutionary Ecology Research Group


at the University of Colorado - Boulder

Primary Investigator - Rebecca Safran

Dr. Rebecca Safran, Assistant Professor

University of Colorado at Boulder

Department of Ecology and Evolutionary Biology

CB334, Ramaley N395

Boulder, CO 80309

Office Phone :: (303) 735 - 1495