Zhalong Nature Preserve (simplified Chinese: 扎龙国家级自然保护区; traditional Chinese: 扎龍國家級自然保護區; pinyin: zhālóng guójiā jízìránbǎohùqū) is a wetland reserve in Heilongjiang province, China.

[3] Established in 1979, the 2,100 km2 (810 sq mi) marshland is a major migratory route for birds from the Arctic migrating to South East Asia and is one of the few breeding grounds in the far east for the marsh grassbird (Megalurus pryeri).

Within the park, a large flock of red-crowned cranes is held in captivity for conservation purposes.

[2] This marsh reserve serves as a stopover and nesting area for a large number of storks, swans, herons, grebes and other species.

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