Polder den Hoek is a beautiful meadow bird area in the area called Krimpenerwaard. All kinds of meadow birds can still be found here. It is one of the few areas where you can still hear the singing Eurasian Skylark among the meadow birds in the spring. In the winter months, this area is very popular with Greater White-fronted Goose, Tundra Swan (Bewick's Swan) and Eurasian Wigeon. Because in spring wet areas (called 'plasdras' in dutch) are deliberately created by pumping water on the meadows and also because the grass is only cut late in the season, it is teeming with meadow birds in the spring and summer. The area even sees a few Black-winged Stilt every year. Among the other birds you can see here are Black-tailed Godwit, Common Redshank, Greylag Goose, Barnacle Goose, Northern Shoveler, Gadwall and Tufted Duck.
The nature reserve can be visited from the Lekdijk, Tiendweg Oost, Wetering Oost and Parallelweg (Drive parallel along the n 210 between Lekkerkerk and Bergambacht). You can walk partly through the area via walking paths.