Klub 300 CZ is a Czech birdwatching community and online resource for people interested in ornithology, bird identification, and observation. Its website brings together articles, trip reports, club news, practical information about equipment and literature, and updates on bird records and notable sightings. A prominent focus is the Tovačov area, where regular reports document observations by month, alongside short news items about rare and unusual birds seen in Moravia.

The site also features bird photography, observation records, information about locations, and material on identification. Its Czech BirdList Contest presents rankings and lists for birders tracking species in the Czech Republic and worldwide, including life lists, annual lists, and global records. Visitors can browse news and articles, follow recent observations, view gallery images, and take part in discussion through comments.

Klub 300 CZ serves as an information and community platform for amateur and experienced birders, supporting the sharing of field observations, knowledge, and enthusiasm for birds and their habitats