Since i came here to ATS, I haven't seen any mentionof any crypto birds. I've heard legends of huge birds, liek Rocs....has anyone hear anything on this topic??

What is this "Rocs" thing you're talking about?

Rocs were mythological birds which were huge. I don't know the exact numbers, but they were supposed to have wingspans of over 40 feet or something. The pictures I've seen drawn of them made them look like a cross between a dodo bird (beak) and a condor (body).

But I've not heard anything about these in current cryptozoology. Please tell more!

You might try a google search for "thunder birds"