I watched two swans swim for quite a while the other day. Quite an achievement if I do say so myself - since there were times I was even afraid to breathe!
Anyway, since swans like breadcrumbs, and since I'm all about sharing ...I was happy to feed them lunch. However, I can tell you two things for certain:
1. Swans are very fast and can catch and devour a crumb in mid flight...
2. Peanut butter makes them choke.