The bird sanctuary gives you time to slow down, stop, look and listen. Climb up to the roofed birdwatching tower on Kärjenkallio, one of the largest in the Nordic countries, with room for around 50 people. The birdwatching towers on the southern side of Lake Puurijärvi, in Mutilahti and on the northern side, in Ahvenus, are approximately 4 metres high. A nature watching tower is located on Isosuo Mire.
The most common bird species in the park include the meadow pipit (Anthus pratensis) and yellow wagtail (Motacilla flava). Many waders nest in the mires, including the golden plover (Pluvialis apricaria) and wood sandpiper (Tringa glareola). Isosuo mire is the most valuable area in the park in terms of its birdlife.