"Gourdin Island". BirdLife data zone: Important Bird Areas. BirdLife International. 2013. Archived from the original on 10 July 2007. Retrieved 1 January 2013.
"Gourdin Island". BirdLife data zone: Important Bird Areas. BirdLife International. 2013. Archived from the original on 10 July 2007. Retrieved 1 January 2013.