When I started observing, photographing and recording birds, I thought I needed a way to organize the information for myself. What did I see when? Did I ever see or hear that bird before? Where else is there information online about it? As a years-long Java application developer, I wrote some code to generate this information systematically on my web site. Maybe these pages will be of interest or use to someone else too.
Lieber Deutsch? Ein Teil der Texte gibt's auf Deutsch, sonst gemischt mit Englisch.