Club300.dk is a Danish birdwatching community and information hub for people interested in observing, identifying and documenting birds in Denmark and beyond. The site brings together birders through articles, a discussion forum and a photo archive featuring images, field observations and sonograms. Members can explore species and country lists, track Danish sightings and annual species totals, and follow personal birding lists and records of rare or notable birds.

The website also shares news and reports on significant sightings, birding activities and decisions by the Danish Rarity Committee. Its calendar highlights events and initiatives such as bird races, seasonal birding operations and gatherings at Mandø. Visitors can find practical links to birding sites, observation databases, weather information, bird stations and international birdwatching resources. A membership section, guidelines and information about the club help users take part in the community. With its combination of sightings, photography, discussion and birding records, Club300.dk supports Danish birders in sharing discoveries and following the country’s birdlife.