In the last episode, it was revealed that the chickens all shared their names with famous philosophers.
I was able to find most of the references fairly easily, but the origin of Jonathan's name eludes me:
Edmun Husserl, who established the school of phenomenology
Confucius, the very famous Chinese philosopher.
Roger Bacon, a Franciscan friar who placed considerable emphasis on the study of nature through empirical methods.
Tadano Makuzu, a poet and philosopher who wrote important commentaries on Japan's social and political problems.
Which philosopher was Jonathan - presumably the central chicken in the above picture - named after?
I was able to find several philosophers named Jonathan, but most of them are still alive, and much more recent than the other philosophers.