EVOLUTION Correction for “Comparative transcriptomics of 3 high-altitude passerine birds and their low-altitude relatives,” by Yan Hao, Ying Xiong, Yalin Cheng, Gang Song, Chenxi Jia, Yanhua Qu, and Fumin Lei, which was first published May 24, 2019; 10.1073/pnas.1819657116 (Proc. Natl. Acad. Sci. U.S.A. 116, 11851–11856).
The authors note that, due to a printer’s error, the following text appeared incorrectly: on page 11851, left column, second paragraph, line 5, “black-throated tit (Aegithalos iouschistos)” should instead appear as “rufous-fronted tit (Aegithalos iouschistos)”; and, on the same page, right column, first paragraph, line 3, “rufous-fronted tit (Aegithalos concinnus)” should instead appear as “black-throated tit (Aegithalos concinnus).”