Though its a great idea, someone has to be on the job for it regularly. I agree with Sabysachi that it could be painstaking.

However, we could have an index of birds tagged to the images in the birds section. Meaning, when one uploads an image of a bird they could tag it to the category/type/name of the bird. So if one wants to look at a particular bird/category, they click on the index item and it displays all images taken by our members of that particular bird/category.

Atleast this will ensure that the catalogue contains images taken by our members along with the narration of the birding incident.