World Migratory Bird Day is celebrated twice in one year ?

The day is marked on the second Saturday of May and October (13 May and 14 October in 2023), to reflect the cyclical nature of bird migration. The arrival and departure dates of migration have been consistent over the years as birds use environmental cues, including temperature, to determine when they should take flight. However, due to global warming, their annual migration rhythm is changing. Many migratory birds have to alter their routes, shorten or completely cancel their journey due to changing temperatures. 





 


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