Great job guys! The comics are pretty funny and the site looks good.
In Firefox 3 there's a big gap between the top of the page and the logo banner. Adblock Plus says it blocked 2 items, so if there's supposed to be an ad banner up there, that would explain it.
Also, the navigation links (Home, Archive, Downloads, About, Contact) appear pixelated, like they were created at a smaller size and then enlarged. Even the title "Head in the Clouds" looks a little pixelated, but the navigation links are very noticeable.
Here's a screenshot of how it looks on my computer.new birdy comic website from nudone and timns
Good job nudone and timns! You're really doing something great!