Feeling the heat: Elevated temperature affects male display activity of a lekking grassland bird

Sep 16, 2019

Gudka, M., Santos, C.D., Dolman, P.M., Abad-Gómez, J.M. and Silva, J.P.

Most species-climate models relate range margins to long-term mean climate but lack mechanistic understanding of the ecological or demographic processes underlying the climate response. We examined the case of a climatically limited edge-of-range population of a medium-sized grassland bird, for which climate responses may involve a behavioural trade-off between temperature stress and reproduction. We hypothesised that temperature will be a limiting factor for the conspicuous, male snort-call display behaviour, and high temperatures would reduce the display activity of male birds.

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