:::::I actually went through the old WP:TOL archives, and found you saying the same thing back in 2004 (and I'm not sure, but I think you wrote that yourself way back then).  There were lots of people who disagreed with you then, and I'm sorry, but I disagree with you now (and since when have platypi been birds ... duck-billed or not? ) ).  But that isn't the issue.  The word "platypus" is like "dog" or "cat".  You should not capitalise it.  By all means, if you wish to be consistent, capitalise "Duck-Billed Platypus".  ||