DOWN THE LONG WIND BY GARTH CHRISTIAN
This is a story – it is a factual story of different types of birds migrating
“On nights when strong moonlight framed deep shadows over fields and woods, small warblers were seen to migrate towards the moon – as if intent on proving Charles Morton had at least something of a case! Ideal conditions for migration proved to be clear calm nights when the stars were shining, though without such brilliance that the eyes were dazzled.
The fact that far more small song birds migrate by night than by day has generally been thought to be due to the need to escape maurauding predators. Recently it has been suggested that the birds may find navigation by night more reliable than day time flying by the sun, though we cannot exclude the possibility that even in daylight they may seek guidance from the stars and moon.”
And so the book goes on with stories which always include bird migration, Dunkirk is mentioned as are shepherds and stockmen striding across the marshes. It’s such an interesting book and was published in 1961
I recommend you read it