Human recreation reduces clutch size in great tits Parus major regardless of risk-taking personality

A Hutfluss, N J Dingemanse and Ulrika Candolin

Behavioral Ecology, 2019, vol. 30, issue 6, 1751-1760

Abstract: Recreation negatively affects wildlife by influencing animal behavior vital to reproduction and survival. Such nonconsumptive effects of perceived predation risk are mainly studied in ground-breeding birds. However, if antipredator responses characterize bird species generally, so should nonconsumptive effects of perceived predation associated with human recreation. Moreover, as individuals consistently differ in behaviors linked to antipredator responses, they should also differ in responses to recreation, with bolder birds being less affected. To test this key prediction, we quantified effects of human recreation pressure on a cavity-breeding passerine. We uniquely quantified human recreation pressure over a substantial (8-year) period within 12 nest box populations of the great tit Parus major, assayed annually for reproductive parameters. We detected considerable spatial variation in recreation pressure. In plots with high recreation pressure, we found strong support for birds breeding further away from highly frequented paths and birds producing smaller clutches; we also found moderate support for birds producing fewer fledglings. These detrimental effects did not vary with behavioral proxies of an individual’s risk-taking phenotype (exploratory activity). This implies that effects of recreation pressure apply to the average bird, and extend to species (like forest birds) not previously considered.

Keywords: animal personality; clutch size; human disturbance; life history; nest site selection; perceived predation risk (search for similar items in EconPapers)
Date: 2019
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