Darwin's finches treat their feathers with a natural repellent.
Cimadom A, Causton C, Cha DH, Damiens D, Fessl B, Hood-Nowotny R, Lincango P, Mieles AE, Nemeth E, Semler EM, Teale SA, Tebbich S.
Cimadom A, et al.
Sci Rep. 2016 Oct 10;6:34559. doi: 10.1038/srep34559.
Sci Rep. 2016.
PMID: 27721475
Free PMC article.