I am experimenting with search engines again to help navigation within the site. If nothing else it teaches me a bit better how to label pages. If you are looking for a particular species try searching with both singular and plural versions of the name...eg. skua, skuas.
Unfortunately it doesn't look straightforward to make image searches within the site and it is a case of just going through a list of possible pages which open in this window & use the back button to return to the list of possible results.