This is a recent National Geographic article on "If birds left tracks in
the sky, they'd look like this"
Truly something to see.
I hope this link works:
https://www.nationalgeographic.com/magazine/2018/01/photo-journal-birds-paths-migration-starling/?cmpid=org=ngp::mc=crm-email::src=ngp::cmp=editorial::add=SpecialEdition_Escape_20200702&rid=7895D5EA7EB4A7B2F6D9118CA15D2825



Martha Jordan
Everett, WA
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