Balbontín, J., De Lope, F., Hermosell, I.G., Mousseau, T.A., Møller, A.P., 2011. Determinants of age-dependent change in a secondary sexual character. J. Evol. Biol. 24, 440-448. https://doi.org/10.1111/j.1420-9101.2010.02183.x. |
Buchholz, R., 1996. Thermoregulatory role of the unfeathered head and neck in male wild turkeys. Auk 113, 310-318. https://doi.org/10.2307/4088897. |
Carroll, J.M., Davis, C.A., Elmore, R.D., Fuhlendorf, S.D., 2015. A ground-nesting galliform's response to thermal heterogeneity: implications for ground-dwelling birds. PLoS One 10, e0143676. https://doi.org/10.1371/journal.pone.0143676. |
Chittenden, H., Allan, D., Weiersbye, I., 2012. Roberts Geographic Variation of Southern African Birds. The John Voelcker Bird Book Fund, Cape Town. |
Clancey, P.A., 1980. Checklist of Southern African Birds. The Southern African Ornithological Society, Pretoria. |
Cook, T.R., Martin, R., Roberts, J., Häkkinen, H., Botha, P., Meyer, C., et al., 2020. Parenting in a warming world: thermoregulatory responses to heat stress in an endangered seabird. Conserv. Physiol. 8, coz109. https://doi.org/10.1093/conphys/coz109. |
Cooney, C.R., Seddon, N., Tobias, J.A., 2016. Widespread correlations between climatic niche evolution and species diversification in birds. J. Anim. Ecol. 85, 869-878. https://doi.org/10.1111/1365-2656.12530. |
Cornwallis, C.K., Dean, R., Pizzari, T., 2014. Sex-specific patterns of aging in sexual ornaments and gametes. Am. Nat. 184, E66-E78. https://doi.org/10.1086/677385. |
Crowe, T.M., 1978. The evolution of guinea-fowl (Galliformes, Phasianidae, Numidinae) taxonomy, phylogeny, speciation and biogeography. Ann. S. Afr. Mus. 76, 43-136. |
Crowe, T.M., 1979. Adaptive morphological variation in Helmeted Guineafowl Numida meleagris and Crested Guineafowl Guttera pucherani. Ibis 121, 313-320. https://doi.org/10.1111/j.1474-919X.1979.tb06848.x. |
Crowe, T.M., Crowe, A.A., 1979. Anatomy of the vascular system of the heads and neck of Helmeted Guineafowl Numida meleagris. J. Zool. 188, 221-233. https://doi.org/10.1111/j.1469-7998.1979.tb03401.x. |
Crowe, T.M., Elbin, S.B., 1987. Social behaviour of Helmeted Guineafowl Numida meleagris. S. Afr. J. Wildl. Res. 1, 55-57. |
Crowe, T.M., Withers, P.C., 1979. Brain temperature regulation in Helmeted Guineafowl. S. Afr. J. Sci. 75, 362-365. |
Delhey, K., 2017. Darker where cold and wet: Australian birds follow their own version of Gloger's rule. Ecography 41, 673-683. https://doi.org/10.1111/ecog.03040. |
Eastick, D.L., Tattersall, G.J., Watson, S.J., Lesku, J.A., Robert, K.A., 2019. Cassowary casques act as thermal windows. Sci. Rep. 9, 1966. https://doi.org/10.1038/s41598-019-38780-8. |
Eduardo, J., Bicudo, P.W., Buttemer, W.A., Chappel, M.A., Pearson, J.T., Bech, C., 2010. Ecological and Environmental Physiology of Birds. Oxford University Press, New York. |
Fairbairn, D.J., Blanckenhorn, W.U., Szekely, T., 2008. Sex, Size and Gender Roles: Evolutionary Studies of Sexual Size Dimorphism. Oxford University Press, Oxford. doi: https://doi.org/10.1093/acprof:oso/9780199208784.001.0001. |
Florez-Duquet, M., Mcdonald, R.B., 1998. Cold-induced thermoregulation and biological aging. Physiol. Rev. 78, 339-358. doi: 10.1152/physrev.1998.78.2.339 |
Fernandez, M.E., Labaque, M.C., Orso, G., Marin, R.H., Kembro, J.M., 2021. Short- and long-term dynamics of the physiological and behavioral response to heat stress and thymol supplementation in Japanese quail. J. Therm. Biol. 97, 102876. https://doi.org/10.1016/j.jtherbio.2021.102876. |
Friedman, N.R., Miller, E.T., Ball, J.R., Kasuga, H., Remeš, V., Economo, E.P., 2019. Evolution of a multifunctional trait: shared effects of foraging ecology and thermoregulation on beak morphology, with consequences for song evolution. Proc. R. Soc. Lond. B. 286, 20192474. https://doi.org/10.1098/rspb.2019.2474. |
Galván, I., Palacios, D., Negro, J.J., 2017. The bare head of the Northern Bald Ibis (Geronticus eremita) fulfills a thermoregulatory function. Front. Zool. 14, 15. https://doi.org/10.1186/s12983-017-0201-5. |
Galván, I., Rodríguez-Martínez, S., Carrascal, L.M., 2018. Dark pigmentation limits thermal niche position in birds. Funct. Ecol. 32, 1531–1540. https://doi.org/10.1111/1365-2435.13094. |
Gerson, A.R., Smith, E.K., Smit, B., McKechnie, A.E., Wolf, B.O., 2014. The impact of humidity on evaporative cooling in small desert birds exposed to high air temperatures. Physiol. Biochem. Zool. 87, 782-795. https://doi.org/10.1086/678956. |
Grosiak, M., Koteja, P., Bauchinger, U., Sadowska, E.T., 2020. Age-related changes in the thermoregulatory properties in bank voles from a selection experiment. Front. Physiol. 11, 576304. https://doi.org/10.3389/fphys.2020.576304. |
Hanan, N.P., Prihodko, L., Ross, C.W., Bucini, G., Tredennick, A.T., 2020. Gridded estimates of woody cover and biomass across Sub-Saharan Africa, 2000-2004. ORNL DAAC, Oak Ridge. https://doi.org/10.3334/ORNLDAAC/1777. |
Hoops, D., Whiting, M.J., Keogh, J.S., 2022. A smaller habenula is associated with increasing intensity of sexual selection. Brain Behav. Evol. https://doi.org/10.1159/000521750. |
Iverson, E.N.K., Karubian, J., 2017. The role of bare parts in avian signalling. Auk 134, 587-611. https://doi.org/10.1642/AUK-16-136.1. |
Jeren, P., Jenni-Eiermann, S., McKeegan, D., McCafferty, D.J., Nage, R.G.R., 2019. Eye region surface temperature dynamics during acute stress relate to baseline glucocorticoids independently of environmental conditions. Physiol. Behav. 210, 112627. https://doi.org/10.1016/j.physbeh.2019.112627. |
Kim, D.H., Lee, Y.K., Lee, S.D., Kim, S.H., Lee, K.W., 2021. Physiological and behavioral responses of laying hens exposed to long-term high temperature. J. Therm. Biol. 99, 103017. https://doi.org/10.1016/j.jtherbio.2021.103017. |
Kimball, R.T., Edward, L., Braun, J., 2008. A multigene phylogeny of Galliformes supports a single origin of erectile ability in non-feathered facial traits. J. Avian Biol. 39, 438-445. https://doi.org/10.1111/j.2008.0908-8857.04270.x. |
Kimball, R.T., St. Mary, C.M., Braun, E.L., 2011. A macroevolutionary perspective on multiple sexual traits in the Phasianidae (Galliformes). Int. J. Evol. Biol. 11, 423938. https://doi.org/10.4061/2011/423938. |
Larochelle, J., Delson, J., Schmidt-Nielsen, K., 1982. Temperature regulation in the Black Vulture. Can. J. Zool. 60, 491-494. https://doi.org/10.1139/z82-073. |
Little, R., 2016. Terrestrial Gamebirds and Snipes of Africa. Jacana, Cape Town. |
Madge, S., McGowan, P., 2002. Pheasants, Partridges and Grouse. Christopher Helm, London. |
Møller, A.P., de Lope, F., 1999. Senescence in a short-lived migratory bird: age-dependent morphology, migration, reproduction and parasitism. J. Anim. Ecol. 68, 163-171. https://doi.org/10.1046/j.1365-2656.1999.00274.x. |
Moore, A.J., 1990. The evolution of sexual dimorphism by sexual selection: the separate effects of intrasexual selection and intersexual selection. Evolution 44, 315-331. doi: 10.1111/j.1558-5646.1990.tb05201.x |
Mori, E., Mazza, G., Lovari, S., 2017. Sexual dimorphism. In: Vonk, J., Shakelford, T. (Eds. ), Encyclopedia of Animal Cognition and Behavior. Springer International Publishing, Switzerland, pp. 1-7. |
|