Dr Steve Portugal

  1. 2013
  2. Published

    Balancing the competing requirements of air-breathing and display behaviour during male-male interactions in Siamese fighting fish Betta splendens

    Alton, L. A., Portugal, S. J., White, C. R. & Portugal, S., 1 Feb 2013, In: Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology. 164, 2, p. 363-367 5 p.

    Research output: Contribution to journalArticlepeer-review

  3. Published

    Implantation reduces the negative effects of bio-logging devices on birds

    White, C. & Portugal, S., 4 Apr 2013, In: Journal of Experimental Biology.. 216, p. 537-542

    Research output: Contribution to journalArticlepeer-review

  4. 2014
  5. Published

    Rapid development of brood-parasitic cuckoo embryos cannot be explained by increased gas exchange through the eggshell

    Portugal, S. J., Hauber, M. E., Maurer, G., Stokke, B. G., Grim, T. & Cassey, P., 1 Jan 2014, In: Journal of Zoology . 293, 4, p. 219-226 8 p.

    Research output: Contribution to journalArticlepeer-review

  6. Published

    Upwash exploitation and downwash avoidance by flap phasing in ibis formation flight

    Portugal, S., Hubel, T. Y., Fritz, J., Heese, S., Trobe, D., Voelkl, B., Hailes, S., Wilson, A. M. & Usherwood, J. R., 15 Jan 2014, In: Nature. 505, p. 399-402 4 p.

    Research output: Contribution to journalArticlepeer-review

  7. Published

    Visual scoring of eggshell patterns has poor repeatability

    Brulez, K., Choudhary, P. K., Maurer, G., Portugal, S. J., Boulton, R. L., Webber, S. L., Cassey, P. & Portugal, S., 1 Jul 2014, In: Journal of Ornithology . 155, 3, p. 701-706 6 p.

    Research output: Contribution to journalArticlepeer-review

  8. Published

    Nesting behaviour influences species-specific gas exchange across avian eggshells

    Portugal, S., Maurer, G. & Cassey, P., 15 Jul 2014, In: Journal of Experimental Biology.. 217, 18, p. 3326-3332 6 p., 10.1242/jeb.103291.

    Research output: Contribution to journalArticlepeer-review

  9. 2015
  10. Published

    First light for avian embryos: eggshell thickness and pigmentation mediate variation in development and UV exposure in wild bird eggs

    Maurer, G., Portugal, S., Hauber, M. E., Mikšík, I., Russell, D. G. D. & Cassey, P., Feb 2015, In: Functional Ecology. 29, 2, p. 209-218 10 p.

    Research output: Contribution to journalArticlepeer-review

  11. Published

    Matching times of leading and following suggest cooperation through direct reciprocity during V-formation flight in ibis

    Voelkl, B., Portugal, S., Unsold, M., Usherwood, J., Wilson, A. & Fritz, J., 17 Feb 2015, In: Proceedings of the National Academy of Sciences of the United States of America. 112, 7, p. 2115–2120 6 p.

    Research output: Contribution to journalArticlepeer-review

  12. 2016
  13. Published

    The fast and forceful kicking strike of the secretary bird

    Portugal, S., Campbell, M., Sparkes, E. & Daley, M., 25 Jan 2016, In: Current Biology. 26, 2, p. 58-59 2 p.

    Research output: Contribution to journalArticlepeer-review

  14. Published

    Eggshell pigment composition covaries with phylogeny but not with life history or with nesting ecology traits of British passerines

    Brulez, K., Portugal, S. & Cassey, P., Mar 2016, In: Ecology and Evolution. 6, 6, p. 1637–1645 9 p.

    Research output: Contribution to journalArticlepeer-review

  15. Published

    Associations Between Resting, Activity and Daily metabolic rate in Free-living Endotherms: No Universal Rule for Birds and Mammals

    Portugal, S., Green, J., Halsey, L. & Butler, P., 14 Apr 2016, In: Physiological and Biochemical Zoology. 89, 3

    Research output: Contribution to journalArticlepeer-review

  16. E-pub ahead of print

    Validating a Noninvasive Technique for Monitoring Embryo Movement In Ovo

    Pollard, A., Pitsillides, A. & Portugal, S., 16 May 2016, (E-pub ahead of print) In: Physiological and Biochemical Zoology. 89, 4, p. 331-339 9 p.

    Research output: Contribution to journalArticlepeer-review

  17. Published

    Bringing a Time–Depth Perspective to Collective Animal Behaviour

    Biro, D., Sasaki, T. & Portugal, S., Jul 2016, In: Trends in Ecology and Evolution. 31, 7, p. 550–562 13 p.

    Research output: Contribution to journalArticlepeer-review

  18. Published

    Does hyperthermia constrain flight duration in a short-distance migrant?

    Guillemette, M. & Portugal, S., 26 Sep 2016, In: Philosophical Transactions of the Royal Society of London B: Biological Sciences. 371, 1704, p. 1-8 8 p.

    Research output: Contribution to journalArticlepeer-review

  19. 2017
  20. Published

    Homing pigeons (Columba livia) modulate wingbeat characteristics as a function of route familiarity

    Taylor, L., Portugal, S. & Biro, D., 2017, In: Journal of Experimental Biology. 220, 16, p. 2908-2915 8 p.

    Research output: Contribution to journalArticlepeer-review

  21. Published

    Perch height predicts dominance rank in birds

    Portugal, S., Sivess, L., Martin, G., Butler, P. & White, C., Apr 2017, In: Ibis. 159, 2, p. 456–462 7 p.

    Research output: Contribution to journalArticlepeer-review

  22. Published

    White‐headed Vulture Trigonoceps occipitalis shows visual field characteristics of hunting raptors

    Portugal, S., Murn, C. & Martin, G., Apr 2017, In: Ibis. 159, 2, p. 463–466 4 p.

    Research output: Contribution to journalArticlepeer-review

  23. Published

    It Takes Time to Be Cool: On the Relationship between Hyperthermia and Body Cooling in a Migrating Seaduck

    Guillemette, M., Polymeropoulos, E., Portugal, S. & Pelletier, D., 25 Jul 2017, In: Frontiers in Physiology. 8, p. 1-10 10 p., 532.

    Research output: Contribution to journalArticlepeer-review

  24. Published

    Boldness traits, not dominance, predicts exploratory flight range and homing behaviour in homing pigeons

    Portugal, S., Ricketts, R., Chappell, J., White, C., Shepard, E. & Biro, D., Aug 2017, In: Philosophical Transactions of the Royal Society of London B: Biological Sciences. 372, 1727, p. 1-10 10 p.

    Research output: Contribution to journalArticlepeer-review

  25. Published

    Life in a bubble: the role of the labyrinth organ in determining territory, mating and aggressive behaviours in Anabantoid fishes

    Tate, M., McGoran, R., White, C. & Portugal, S., Sep 2017, In: Journal of Fish Biology. 91, 3, p. 723-749 27 p.

    Research output: Contribution to journalArticlepeer-review

  26. 2018
  27. Published

    A rare mineral, vaterite, acts as a shock absorber in the eggshell of a communally nesting bird

    Portugal, S., Bowen, J. & Riehl, C., 3 Jan 2018, In: Ibis. 160, 1, p. 173-178 6 p.

    Research output: Contribution to journalArticlepeer-review

  28. Published

    Miniaturisation of biologgers is not alleviating the 5% rule

    Portugal, S. & White, C., Jul 2018, In: Methods in ecology and evolution. 9, 7, p. 1662-1666 5 p.

    Research output: Contribution to journalArticlepeer-review

  29. Published

    Flight feather moult drives minimum daily heart rate in wild geese

    Portugal, S., White, C., Green, J. & Butler, P., Nov 2018, In: Biology Letters. 14, 11, p. 1-4 4 p.

    Research output: Contribution to journalArticlepeer-review

  30. 2019
  31. E-pub ahead of print

    Visual fields and foraging ecology of Blacksmith Lapwings Vanellus armatus

    Cantlay, J., Portugal, S. & Martin, G., 14 Mar 2019, (E-pub ahead of print) In: Ibis. p. 1-6 6 p.

    Research output: Contribution to journalArticlepeer-review

  32. Published

    The origin and maintenance of metabolic allometry in animals

    White, C. R., Marshall, D. J., Alton, L. A., Arnold, P. A., Beaman, J. E., Bywater, C. L., Condon, C., Crispin, T. S., Janetzki, A., Pirtle, E., Winwood-Smith, H. S., Angilletta, M. J., Chenoweth, S. F., Franklin, C. E., Halsey, L. G., Kearney, M. R., Portugal, S. J. & Ortiz-Barrientos, D., 18 Mar 2019, In: Nature Ecology and Evolution. 3, p. 598-603 6 p.

    Research output: Contribution to journalArticlepeer-review