Flexible breeding performance under unstable climatic conditions in a tropical passerine in Southwest China.

Parents may adjust their breeding time to optimize reproductive output and reduce reproductive costs associated with unpredictable climatic conditions, especially in the context of global warming. The breeding performance of tropical bird species in response to local climate change is relatively understudied compared with that of temperate bird species. Here, based on data from 361 white-rumped munia ( ) nests, we determined that breeding season onset, which varied from 15 February to 22 June, was delayed by drought and high temperatures.