How do birds navigate and pigeons home?

Despite decades of research, no one knows how birds navigate to destinations hundreds of miles away. Rupert suggests that there is a field-mediated sense of direction through which they are attracted towards their goals. This is the first of a series of six talks on potential breakthroughs in the sciences released as an online course here:
https://www.sheldrake.org/online-courses

Related book:
Seven Experiments That Could Change the World
https://www.sheldrake.org/books-by-rupert-sheldrake/seven-experiments-that-could-change-the-world


References
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Satellite Tracking of Wandering Albatrosses
Jouventin,P. and Weimerskirsch, H. 1990. Nature 343, 745-748.
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Perdeck, Albert C.
Two Types of Orientation in Migrating Starlings, Sturnus yulgaris L., and Chaffinches, Fringilla coelebs L., as Revealed by Displacement Experiments. Ardea, 55(1–2) : 1-2.
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Netherlands Ornithologists' Union
https://doi.org/10.5253/arde.v1i2.p1
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Magnetic Fields 1750-1980 
Bloxham, J. and Gubbins, D. 1985. The secular variation of tye earth’s magnetic field. Nature 317, 778-781.
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World War 1 Pigeon Loft Photos
public domain
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Mobile Loft Experiment at Coldham hall, Suffolk, 1989
With Robbie Robson of Bury St. Edmunds Racing Pigeon Club
Photo by: Jill Purce
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Dutch Navel Pigeon Experiment
HNLMS Tydeman
June, 1995
Filmed by: Louis van Gasteren, Gregor Meerman and Jacqueline van Vugt