World's Best Scientists 2026 revealed!

D-Index & Metrics

Ecology and Evolution

D-Index
43
Citations
6824
World Ranking
5332
National Ranking
1820

Rebecca J. Safran publication distribution in Ecology and Evolution in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Ecology and Evolution in 2026. The highlighted bar marks where Rebecca J. Safran sits on this spectrum.

37–41 publications: 2 scientists 42–46 publications: 9 scientists 47–51 publications: 10 scientists 52–56 publications: 31 scientists 57–61 publications: 56 scientists 62–66 publications: 91 scientists 67–71 publications: 92 scientists 72–76 publications: 127 scientists 77–81 publications: 173 scientists 82–86 publications: 236 scientists 87–91 publications: 227 scientists 92–96 publications: 240 scientists 97–101 publications: 333 scientists 102–106 publications: 280 scientists 107–111 publications: 300 scientists 112–116 publications: 285 scientists 117–121 publications: 305 scientists 122–126 publications: 287 scientists 127–131 publications: 278 scientists 132–136 publications: 289 scientists 137–141 publications: 273 scientists 142–146 publications: 262 scientists 147–151 publications: 246 scientists 152–156 publications: 235 scientists 157–161 publications: 205 scientists 162–166 publications: 199 scientists 167–171 publications: 174 scientists 172–176 publications: 164 scientists 177–181 publications: 173 scientists 182–186 publications: 189 scientists 187–191 publications: 170 scientists 192–196 publications: 139 scientists 197–201 publications: 128 scientists 202–206 publications: 117 scientists 207–211 publications: 115 scientists 212–216 publications: 107 scientists 217–221 publications: 124 scientists 222–226 publications: 81 scientists 227–231 publications: 82 scientists 232–236 publications: 85 scientists 237–241 publications: 75 scientists 242–246 publications: 66 scientists 247–251 publications: 81 scientists 252–256 publications: 69 scientists 257–261 publications: 70 scientists 262–266 publications: 55 scientists 267–271 publications: 64 scientists 272–276 publications: 49 scientists 277–281 publications: 48 scientists 282–286 publications: 44 scientists 287–291 publications: 45 scientists 292–296 publications: 36 scientists 297–301 publications: 39 scientists 302–306 publications: 38 scientists 307–311 publications: 30 scientists 312–316 publications: 34 scientists 317–321 publications: 25 scientists 322–326 publications: 22 scientists 327–331 publications: 28 scientists 332–336 publications: 30 scientists 337–341 publications: 22 scientists 342–346 publications: 30 scientists 347–351 publications: 26 scientists 352–356 publications: 22 scientists 357–361 publications: 29 scientists 362–366 publications: 21 scientists 367–371 publications: 12 scientists 372–376 publications: 18 scientists 377–381 publications: 17 scientists 382–386 publications: 13 scientists 387–391 publications: 21 scientists 392–396 publications: 13 scientists 397–401 publications: 10 scientists 402–406 publications: 15 scientists 407–411 publications: 8 scientists 412–416 publications: 9 scientists 417–421 publications: 8 scientists 422–426 publications: 4 scientists 427–431 publications: 10 scientists 432–436 publications: 10 scientists 437–441 publications: 5 scientists 442–446 publications: 4 scientists 447–451 publications: 10 scientists 452–456 publications: 2 scientists 457–461 publications: 4 scientists 462–466 publications: 7 scientists 467–471 publications: 7 scientists 472–476 publications: 6 scientists 477–481 publications: 6 scientists 482–486 publications: 3 scientists 487–491 publications: 3 scientists 492–496 publications: 4 scientists 497–501 publications: 4 scientists 502–506 publications: 8 scientists 507–511 publications: 5 scientists 512–516 publications: 4 scientists 517–521 publications: 5 scientists 522–526 publications: 4 scientists 527–530 publications: 5 scientists 531+ publications: 100 scientists
37 publications 531+

This scientist: 147 publications — 51st percentile

51% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 531 publications or more.

Rebecca J. Safran D-index placement in Ecology and Evolution in 2026

The chart shows the D-index (discipline H-index) distribution of Ecology and Evolution scientists ranked by Research.com in 2026. The highlighted bar marks where Rebecca J. Safran sits on this spectrum.

30 D-Index: 95 scientists 31 D-Index: 123 scientists 32 D-Index: 191 scientists 33 D-Index: 245 scientists 34 D-Index: 252 scientists 35 D-Index: 244 scientists 36 D-Index: 249 scientists 37 D-Index: 244 scientists 38 D-Index: 254 scientists 39 D-Index: 254 scientists 40 D-Index: 280 scientists 41 D-Index: 274 scientists 42 D-Index: 266 scientists 43 D-Index: 233 scientists 44 D-Index: 248 scientists 45 D-Index: 208 scientists 46 D-Index: 201 scientists 47 D-Index: 213 scientists 48 D-Index: 207 scientists 49 D-Index: 172 scientists 50 D-Index: 209 scientists 51 D-Index: 199 scientists 52 D-Index: 153 scientists 53 D-Index: 169 scientists 54 D-Index: 163 scientists 55 D-Index: 148 scientists 56 D-Index: 120 scientists 57 D-Index: 146 scientists 58 D-Index: 137 scientists 59 D-Index: 140 scientists 60 D-Index: 104 scientists 61 D-Index: 119 scientists 62 D-Index: 118 scientists 63 D-Index: 99 scientists 64 D-Index: 77 scientists 65 D-Index: 100 scientists 66 D-Index: 86 scientists 67 D-Index: 83 scientists 68 D-Index: 75 scientists 69 D-Index: 94 scientists 70 D-Index: 57 scientists 71 D-Index: 68 scientists 72 D-Index: 59 scientists 73 D-Index: 63 scientists 74 D-Index: 66 scientists 75 D-Index: 60 scientists 76 D-Index: 42 scientists 77 D-Index: 49 scientists 78 D-Index: 39 scientists 79 D-Index: 37 scientists 80 D-Index: 43 scientists 81 D-Index: 41 scientists 82 D-Index: 45 scientists 83 D-Index: 34 scientists 84 D-Index: 40 scientists 85 D-Index: 35 scientists 86 D-Index: 55 scientists 87 D-Index: 24 scientists 88 D-Index: 24 scientists 89 D-Index: 30 scientists 90 D-Index: 23 scientists 91 D-Index: 25 scientists 92 D-Index: 27 scientists 93 D-Index: 27 scientists 94 D-Index: 13 scientists 95 D-Index: 23 scientists 96 D-Index: 12 scientists 97 D-Index: 14 scientists 98 D-Index: 19 scientists 99 D-Index: 16 scientists 100 D-Index: 14 scientists 101 D-Index: 5 scientists 102 D-Index: 21 scientists 103 D-Index: 16 scientists 104 D-Index: 10 scientists 105 D-Index: 7 scientists 106 D-Index: 7 scientists 107 D-Index: 7 scientists 108 D-Index: 6 scientists 109 D-Index: 9 scientists 110 D-Index: 11 scientists 111 D-Index: 12 scientists 112 D-Index: 9 scientists 113 D-Index: 7 scientists 114 D-Index: 3 scientists 115 D-Index: 8 scientists 116 D-Index: 5 scientists 117 D-Index: 11 scientists 118 D-Index: 4 scientists 119 D-Index: 2 scientists 120 D-Index: 5 scientists 121+ D-Index: 100 scientists
30 D-Index 121+

This scientist: 43 D-Index — 38th percentile

38% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 121 D-Index or more.

Overview

Rebecca J. Safran is affiliated with the University of Colorado Boulder in the United States. Their research spans multiple areas within biological sciences, with primary focus on the intersection of ecology, evolution, and behavior.

The main fields of study for Safran include Biochemistry, Genetics and Molecular Biology, Agricultural and Biological Sciences, and Environmental Science. Within these broader domains, their work concentrates on several subfields such as Ecology, Evolution, Behavior and Systematics, Genetics, Molecular Biology, and Developmental Biology.

Key topics addressed in Safran's research cover Animal Behavior and Reproduction, Genetic diversity and population structure, Avian ecology and behavior, Plant and animal studies, Wildlife Ecology and Conservation, Animal Vocal Communication and Behavior, and Genetic and phenotypic traits in livestock.

Safran has published papers in a variety of scientific journals. Frequent publication venues include Trends in Ecology & Evolution, Behavioral Ecology and Sociobiology, bioRxiv (Cold Spring Harbor Laboratory), Evolution, and Ecology and Evolution.

Recent papers authored or co-authored by Safran cover subjects related to model selection, speciation, migratory divides, and female bird song in the context of sex differences. Notable publications include:

  • A biologist's guide to model selection and causal inference (2021), published in Proceedings of the Royal Society B Biological Sciences
  • Rapid speciation via the evolution of pre-mating isolation in the Iberá Seedeater (2021), published in Science
  • Speciation by sexual selection: 20 years of progress (2021), published in Trends in Ecology & Evolution
  • A migratory divide spanning two continents is associated with genomic and ecological divergence (2022), published in Evolution
  • Analysis of female song provides insight into the evolution of sex differences in a widely studied songbird (2020), published in Animal Behaviour

Collaboration has been a significant component of Safran's work. Frequent co-authors include Drew R. Schield, Zachary M. Laubach, Sage A. Madden, Elizabeth S. C. Scordato, and Yu Liu, with multiple joint publications indicating ongoing research partnerships.

Best Publications

  • Vertebrate pigmentation: from underlying genes to adaptive function

    Joanna K. Hubbard;J. Albert C Uy;Mark Erno Hauber;Hopi E. Hoekstra

  • Evolutionary divergence in acoustic signals: causes and consequences

    Matthew R. Wilkins;Nathalie Seddon;Rebecca J. Safran

  • Plumage coloration, not length or symmetry of tail-streamers, is a sexually selected trait in North American barn swallows

    Rebecca J. Safran;Kevin J. McGraw

  • Sexual selection accelerates signal evolution during speciation in birds

    Nathalie Seddon;Carlos A. Botero;Joseph A. Tobias;Peter O. Dunn

  • Contributions of natural and sexual selection to the evolution of premating reproductive isolation: a research agenda.

    Rebecca J. Safran;Elizabeth S.C. Scordato;Elizabeth S.C. Scordato;Laurel B. Symes;Rafael L. Rodríguez

  • Mechanisms of assortative mating in speciation with gene flow: Connecting theory and empirical research

    Michael Kopp;Maria R Servedio;Tamra C Mendelson;Rebecca J Safran

  • Waterbird responses to experimental drawdown: implications for the multispecies management of wetland mosaics

    Oriane W. Taft;Mark A. Colwell;Craig R. Isola;Rebecca J. Safran

  • How feather colour reflects its melanin content

    Kevin McGraw;R. J. Safran;K. Wakamatsu

  • Transitions between phases of genomic differentiation during stick-insect speciation

    Rüdiger Riesch;Moritz Muschick;Dorothea Lindtke;Romain Villoutreix

  • Dynamic Paternity Allocation as a Function of Male Plumage Color in Barn Swallows

    R. J. Safran;R. J. Safran;C. R. Neuman;C. R. Neuman;Kevin McGraw;Kevin McGraw;I. J. Lovette;I. J. Lovette

  • 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

    Kevin J. McGraw;Kazumasa Wakamatsu;Shosuke Ito;Paul M. Nolan

  • The rate of telomere loss is related to maximum lifespan in birds

    Gianna M Tricola;Mirre J P Simons;Els Atema;Raoul K Boughton

  • Sexual signal exaggeration affects physiological state in male barn swallows.

    Rebecca J. Safran;Rebecca J. Safran;James S. Adelman;Kevin J. McGraw;Michaela Hau

  • Benthic invertebrates at foraging locations of nine waterbird species in managed wetlands of the northern San Joaquin Valley, California

    Rebecca J. Safran;Craig R. Isola;Mark A. Colwell;Oriane E. Williams

  • An experimental analysis of the heritability of variation in glucocorticoid concentrations in a wild avian population.

    Brittany R. Jenkins;Maren N. Vitousek;Joanna K. Hubbard;Rebecca J. Safran

  • Environmental harshness is positively correlated with intraspecific divergence in mammals and birds

    Carlos A. Botero;Roi Dor;Roi Dor;Christy M. Mccain;Rebecca J. Safran

  • Stress and success: Individual differences in the glucocorticoid stress response predict behavior and reproductive success under high predation risk

    Maren N. Vitousek;Maren N. Vitousek;Brittany R. Jenkins;Rebecca J. Safran

  • Genomic approaches to understanding population divergence and speciation in birds

    David P. L. Toews;Leonardo Campagna;Scott A. Taylor;Christopher N. Balakrishnan

  • Phylogeny of the genus Hirundo and the Barn Swallow subspecies complex.

    Roi Dor;Rebecca J. Safran;Frederick H. Sheldon;David W. Winkler

  • Are yolk androgens and carotenoids in barn swallow eggs related to parental quality

    Rebecca J. Safran;Rebecca J. Safran;Kevin M. Pilz;Kevin J. McGraw;Stephanie M. Correa

  • Data from: Transitions between phases of genomic differentiation during stick-insect speciation

    Rüdiger Riesch;Moritz Muschick;Dorothea Lindtke;Romain Villoutreix

Frequent Co-Authors

Patrik Nosil
Patrik Nosil University of Sheffield
Bernard J. Crespi
Bernard J. Crespi Simon Fraser University
Rüdiger Riesch
Rüdiger Riesch Royal Holloway University of London
Kevin J. McGraw
Kevin J. McGraw Arizona State University
Irby J. Lovette
Irby J. Lovette Cornell University
Tomáš Albrecht
Tomáš Albrecht Charles University
Mark E. Hauber
Mark E. Hauber Queens College, CUNY
David W. Winkler
David W. Winkler Cornell University
Nolan C. Kane
Nolan C. Kane University of Colorado Boulder
Rafael Rodríguez
Rafael Rodríguez University of Wisconsin–Milwaukee

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Related Online Degrees & Career Pathways

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