Dr Steve Portugal

  1. 2022
  2. Forthcoming

    Global diversity and adaptations of avian eggshell thickness indices

    Attard, M. & Portugal, S., 5 Sep 2022, (Accepted/In press) In: Ibis.

    Research output: Contribution to journalArticlepeer-review

  3. Published

    Pigeon leadership hierarchies are not dependent on environmental contexts or individual phenotypes

    Sankey, D., Biro, D., Ricketts, R., Shepard, E. & Portugal, S., May 2022, In: Behavioural Processes. 198, 104629.

    Research output: Contribution to journalArticlepeer-review

  4. Published

    Emergence of splits and collective turns in pigeon flocks under predation

    Papadopoulou, M., Hildenbrandt, H., Sankey, D., Portugal, S. & Hemelrijk, C., Feb 2022, In: Royal Society Open Science. 9, 2, 211898.

    Research output: Contribution to journalArticlepeer-review

  5. Published

    Self-organization of collective escape in pigeon flocks

    Papadopoulou, M., Hildenbrandt, H., Sankey, D., Portugal, S. & Hemelrijk, C., 10 Jan 2022, In: PLoS Computational Biology. 18, 1, e1009772.

    Research output: Contribution to journalArticlepeer-review

  6. 2021
  7. E-pub ahead of print

    Externally attached biologgers cause compensatory body mass loss in birds

    Portugal, S. & White, C., 30 Oct 2021, (E-pub ahead of print) In: Methods in ecology and evolution.

    Research output: Contribution to journalArticlepeer-review

  8. Published

    Embryo movement is more frequent in avian brood parasites than birds with other reproductive strategies

    Mcclelland, S., Reynolds, M., Cordall, M., Hauber, M. E., Goymann, W., McClean, L., Hamama, S., Lund, J., Dixit, T., Louder, M., Safari, I., Honza, M., Spottiswoode, C. & Portugal, S., 27 Oct 2021, In: Proceedings of the Royal Society B: Biological sciences. 288, 1961

    Research output: Contribution to journalArticlepeer-review

  9. E-pub ahead of print

    Ecological drivers of eggshell wettability in birds

    Attard, M., Bowen, J., Corado, R., Hall, L., Dorey, R. & Portugal, S., 13 Oct 2021, (E-pub ahead of print) In: Journal of the Royal Society. Interface.

    Research output: Contribution to journalArticlepeer-review

  10. E-pub ahead of print

    How much calcium to shell out? Eggshell calcium carbonate content is greater in birds with thinner shells, larger clutches, and longer lifespans

    Mcclelland, S., Cassey, P., Maurer, G., Hauber, M. E. & Portugal, S., 29 Sep 2021, (E-pub ahead of print) In: Journal of the Royal Society. Interface. 18, 182

    Research output: Contribution to journalArticlepeer-review

  11. E-pub ahead of print

    Overall dynamic body acceleration as an indicator of dominance in Homing Pigeons (Columba livia)

    Ricketts, R., Sankey, D., Tidswell, B., Brown, J., Deegan, J. & Portugal, S., 28 Sep 2021, (E-pub ahead of print) In: Ibis.

    Research output: Contribution to journalArticlepeer-review

  12. E-pub ahead of print

    Climate variability and parent nesting strategies influence gas exchange across avian eggshells

    Attard, M. & Portugal, S., 16 Jun 2021, (E-pub ahead of print) In: Proceedings of the Royal Society B: Biological sciences.

    Research output: Contribution to journalArticlepeer-review

  13. Published

    Absence of “selfish herd” dynamics in bird flocks under threat

    Sankey, D., Storms, R., Musters, R., Russell, T., Hemelrijk, C. & Portugal, S., 4 Jun 2021, In: Current Biology . 31, 14, p. 3192-3198 7 p.

    Research output: Contribution to journalArticlepeer-review

  14. Published

    Fine-scale changes in speed and altitude suggest protean movements in homing pigeon flights

    Garde, B., Wilson, R., Lempidakis, L., Börger, L., Portugal, S., Hedenström, A., Dell’Omo, G., Quetting, M., Wikelski, M. & Shepard, E., 19 May 2021, In: Royal Society Open Science. 8, 5

    Research output: Contribution to journalArticlepeer-review

  15. E-pub ahead of print

    Geographical bias in physiological data limits predictions of global change impacts

    White, C., Marshall, D., Chown, S., Clusella-Trullas, S., Portugal, S., Franklin, C. & Seebacher, F., 19 Apr 2021, (E-pub ahead of print) In: Functional Ecology.

    Research output: Contribution to journalArticlepeer-review

  16. 2020
  17. Published

    Artificial mass loading disrupts stable social order in pigeon dominance hierarchies

    Portugal, S., Usherwood, J., White, C., Sankey, D. & Wilson, A. M., 5 Aug 2020, In: Biology Letters. 16, 8, 6 p.

    Research output: Contribution to journalArticlepeer-review

  18. E-pub ahead of print

    Ineffectiveness of light emitting diodes as underwater deterrents for long-tailed ducks Clangula hyemalis

    Cantlay, J., Bond, A. L., Wells-Berlin, A. M., Crawford, R., Martin, G. R., Rouxel, Y., Peregoy, S., McGrew, K. A. & Portugal, S., 7 May 2020, (E-pub ahead of print) In: Global Ecology and Conservation. e01102.

    Research output: Contribution to journalArticlepeer-review

  19. Published

    Bird flocks

    Portugal, S., 9 Mar 2020, In: Current Biology . 30, 5, p. 206-210 5 p.

    Research output: Contribution to journalArticlepeer-review

  20. Published

    Mechanics of flight feathers: effects of captivity?

    Portugal, S., Nudds, R., Green, J., Alexander, R. M., Butler, P. & Ker, R., 2020, In: bioRxiv.

    Research output: Contribution to journalArticle

  21. Published

    Overall dynamic body acceleration as an indicator of dominance in homing pigeons

    Ricketts, R., Sankey, D., Tidswell, B., Brown, J., Deegan, J. & Portugal, S., 2020, In: bioRxiv.

    Research output: Contribution to journalArticle

  22. Submitted

    Pre-winter fattening and fat loss during wing moult: the annual cycle of fat deposition in captive barnacle geese (Branta leucopsis).

    Portugal, S., McGill, R., Green, J. & Butler, P., 2020, (Submitted) In: bioRxiv.

    Research output: Contribution to journalArticle

  23. Published

    The determinants of aggression in male Siamese fightingfish, Betta splendens

    McGoran, R., Papworth, S. & Portugal, S., 2020, In: bioRxiv.

    Research output: Contribution to journalArticle

  24. 2019
  25. Published

    Speed consensus and the ‘Goldilocks principle’ in flocking birds (Columba livia)

    Sankey, D., Shepard, E., Biro, D. & Portugal, S., Nov 2019, In: Animal Behaviour. 157, p. 105-119 15 p.

    Research output: Contribution to journalArticlepeer-review

  26. E-pub ahead of print

    Weak asymmetric interspecific aggression and divergent habitat preferences at an elevational contact zone between tropical songbirds

    Jones, S., Tobias, J., Freeman, R. & Portugal, S., 26 Oct 2019, (E-pub ahead of print) In: Ibis. p. 1-29 29 p.

    Research output: Contribution to journalArticlepeer-review

  27. E-pub ahead of print

    When flocking is costly: reduced cluster-flock density over long-duration flight in pigeons

    Sankey, D. & Portugal, S., 15 Jul 2019, (E-pub ahead of print) In: The Science of Nature . 106, p. 1-5 5 p., 47.

    Research output: Contribution to journalArticlepeer-review

  28. E-pub ahead of print

    Impacts of “supermoon” events on the physiology of a wild bird

    Portugal, S., White, C., Frappell, P., Green, J. & Butler, P., 25 Jun 2019, (E-pub ahead of print) In: Ecology and Evolution. 9, 14, p. 7974-7984 11 p.

    Research output: Contribution to journalArticlepeer-review

  29. Published

    Birds invest wingbeats to keep a steady head and reap the ultimate benefits of flying together

    Taylor, L., Taylor, G., Lambert, B., Walker, J., Biro, D. & Portugal, S., 18 Jun 2019, In: PLoS Biology. 17, 6, p. 1-20 20 p., e3000299.

    Research output: Contribution to journalArticlepeer-review

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