Adult zebra finches: males with orange cheeks, females are grey. Previous studies [1,2] showed that exposure of adult male zebra finches (Taeniopygia guttata;
![Adult zebra finches: males with orange cheeks, females are grey. Previous studies [1,2] showed that exposure of adult male zebra finches (Taeniopygia guttata;](https://static.fdocuments.us/doc/330x215/56649cbf5503460f949846e2/adult-zebra-finches-males-with-orange-cheeks-females-are-grey-previous-studies.jpg)
