Dodo/Talk

It was discovered that the dodos ate the seeds of the tree, and only by passing through the digestive tract of the dodo did the seeds become active and start to grow.

How was this discovered? I'm not saying I don't believe it, I'm just saying I think it would be interesting trivia.

Perhaps I should have written "deduced" or something like that. The web site where I found the information didn't specify, either. --Pinkunicorn