This video by Frank Schulkes from the Netherlands says about itself:
Isabelline Wheatear, Oenanthe isabellina
14 January 2016
Isabelline Wheatears are among the world’s real long-distance migrants. They are on the Red List of Threatened Species. … This inspired me to follow a couple in Bulgaria during the breeding season. During 2 months I have made 5000 photos, documenting their family life and from which I selected 50 images to edit this clip. Enjoy!!!