Juvenal plumage of the Evening Grosbeak

Evening Grosbeak (Hesperiphona vespertina) Science Article 2


All the authorities that have dealt with the plumages of the Evening Grosbeak have described the juveniles of both sexes as resembling the adult female.

Allan Brooks, The AUK vol. 56, 1939

Download article

Leave a Reply

Your email address will not be published. Required fields are marked *