Danaus plexippus
Lucky if you see Black lines on Orange colour not match with Viceroy.... the mimic of Monarch... This is Male Monarch Butterfly...
http://en.wikipedia.org/wiki/Viceroy_(bu...)
Also check Black tips design of butterfly upperwings.
@LuckyLogan they are very similar but Viceroy has a line across the hind wings which is not present on this specimen.
You could also add to the Monarch Migration Mission http://www.projectnoah.org/missions/8100...
An easy way to tell a Viceroy from a Monarch is the Viceroy had a line across the hind wings http://en.wikipedia.org/wiki/Viceroy_(bu...)
Lat: 45.40, Long: -75.60
Spotted on Jul 12, 2012
Submitted on Jul 12, 2012