Ever read the book??
The naturalist was Farley Mowat.....also the author.
Farley is one of those guys....I can't make up my mind whether to love or hate him........love The Regiment, And No Birds Sang, West Viking, Sibir, Never Cry Wolf and practically everything else he ever wrote.....except....he is guilty of Sea of Slaughter.....and inventing some aspects of his early books written as fact...
Actually, I think you have to love the old curmudgeon..........if you have not read the first two books listed above.....DO!!! Farley's experiences as a Canadian infantryman in World War Two.