HomeGlossary Conservation Stopover site A place where migrating birds rest and refuel on their journey. Losing a single key stopover, such as tidal flats in the Yellow Sea, can affect a whole flyway. ConservationRelated termsFull glossary Altitudinal migration Seasonal movement up and down mountains rather than north and south. Bottleneck A place where migrating birds are funnelled together, such as a strait, isthmus or mountain pass. Endemic A species found naturally in only one area, such as a single country, island or mountain range. IUCN Red List The global assessment of extinction risk, with categories from Least Concern to Extinct. Flyway The whole area used by a migratory bird population, from breeding to non-breeding grounds. Important Bird Area A site identified by BirdLife International as globally important for birds, using standard criteria.
Bottleneck A place where migrating birds are funnelled together, such as a strait, isthmus or mountain pass.
Endemic A species found naturally in only one area, such as a single country, island or mountain range.
IUCN Red List The global assessment of extinction risk, with categories from Least Concern to Extinct.
Important Bird Area A site identified by BirdLife International as globally important for birds, using standard criteria.