Birds like warblers and sparrows regularly give the same calls in flight during the day. Not so much with thrushes but once you know the calls you will hear thrushes (and some other species) occasionally giving them during the day from the ground or even adding them into songs.
I have a recording of a Hermit Thrush that apparently had just descended from a night flight continuing to give its distinctive nocturnal flight call while on the ground in the early morning. If interested I can send the link.
Jeff Wells
-----Original Message-----
From: maine-birds@googlegroups.com [mailto:maine-birds@googlegroups.com] On Behalf Of panteradeath666
Sent: Thursday, October 15, 2015 3:51 PM
To: Maine birds
Subject: [Maine-birds] Nocturnal migrants
Are the nocturnal flight calls heard during migration only made at night
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