I don't find any reasonable doubt that some dinosaurs migrated. The colonization may have occurred as an evolutionary event of such migrations. If you are disputing any possibility of overseas travel, then, my good friend, we'll just agree to differ.
What a nice change of words. Now the dinosaurs are migrating (something nobody doubts) and colonizing (also, something nobody doubts). There is no attempt at all to add to the real issue, which is "overseas travel", however.
I have no quarrel at all with anyone who declares him/herself as non-scientist and talks about ufo abductions, Yetis, and, oh yes, dinosaurs using a nest as a boat. If they declare themselves non-scientists, that is.