This practical lab focuses on the classic-manual microscopic evaluation of avian and reptilian blood films. It is based on a collection of more than 200 samples from about 100 pre-evaluated cases. Every slide is accompanied by a double-sided laminated sheet. The front page contains a series of photographs of the cytomorphologic characteristics of the slide. The back page contains the complete evaluation including haematologic diagnosis, comments, and critical report. The collection encompasses a large variety of species including Psittaciformes, Falconiformes, Strigiformes, Sphenisciformes, Gruiformes, Galliformes, Squamata, and Testudines. Beginners train to recognize the physiologic and pathologic characteristics of blood cells and should be able to perform a differential count afterwards. Advanced practitioners are invited to self-assess their knowledge in a quiz-like manner. Participants are invited to bring their own samples and to discuss them with the instructor. Specific topic working places can be set up for colleagues who express their special field of interest to the instructor in advance such as for example only haematozoa, only birds of prey, or similar.