World Migratory Bird Day, 12 May 2018

This video says about itself:

22 March 2012

Trailer for World Migratory Bird Day. Director: Christian Fischer (www.christianfischer.name) / Composer: Max Würden (www.wuerden.com) / Speaker: Tom Zahner / With original footage by: Mush & Tinbergen, Quite Bright Films, Sergey Panayotov / Animation “Earth from space” ©iStockphoto.com/tetsoo. With creative direction & advice from the WMBD Team! For more information please see: www.worldmigratorybirdday.org or write to: contact@worldmigratorybirdday.org

This year, World Migratory Bird Day is on 12 May in countries all over the world. Eg, in Dutch Oostvaardersplassen national park there are various activitiers that day.

Using weather surveillance radar and citizen-science data, researchers are learning how migratory birds return to their breeding grounds in North America each spring with near-pinpoint accuracy: here.