One of the last questions was about other animals, around the world that may have similar effects to the tapir in the Amazon. I had just finished viewing an episode of THE HISTORY GUY that talked about some environmental connections between the now extinct passenger pigeon and the unintended decline of WHITE OAK in forests across North America. In short, the formerly dominant American WHITE OAK tree species remained dominant prior to 1900 because of the transcontinental distribution of ingested acorn seeds airlifted by an estimated five billion passenger pidgeons. The link to this video is... kzbin.info/www/bejne/mGmlgXSEj9-mr7c