proposed day trip to Calais

We have been talking recently about doing a birding day trip to Calais and surrounding area. I recently read a post on a blog that I thought I followed that had some really good sights and info, however, after looking through all the blogs I follow I can't find it. So fellow bloggers if you have any info you think might useful for a birding day trip to Calais it would be very much appreciated. Either post a comment or my email sh4rpy [at] Hotmail dot com. Many thanks.