Sae Swallow is the annual publication of the Royal Naval Birdwatching Society.
Established in 1946 to help and encourage members serving in the RN, RM and WRNS, in the observation and study of birds at sea, the RNBWS has widened its membership to include all those interested in Birdwatching who share a common background - the sea itself. Membership (including Associate Members from many countries overseas) averages 250, including many from the Merchant Navies of several countries, ocean weather ships, the offshore oil industry, passengers on cruise liners and yachtsmen. Reports received cover most sea areas of the world.
About seven tenths of the world's surface is covered with salt water, which provides the environment for nearly 300 species of seabirds, and across which many more species of landbird travel during their annual migrations. Especially during adverse weather, these frequently take refuge on board ships. The problems of their identification and deduction of their seasonal distribution and migration routes, etc., are challenges providing a fascinating hobby for the seafarer, and such observations can be of unique importance to the serious ornithologist and conservationist.
