Cryptochrome 1a localisation in light- and dark-adapted retinae of several migratory and non-migratory bird species: no signs of light-dependent activation. - Bolte, Petra; Einwich, Angelika; Seth, Pranav K.; Chetverikova, Raisa; Heyers, Dominik; Wojahn, Irina; Janssen-Bienhold, Ulrike; Feederle, Regina; Hore, Peter; Dedek, Karin; Mouritsen, Henrik (Ethology Ecology & Evolution, 2021)