Judie-
According
to HANZAB V4, swifts and swiftlets are thought to sleep on the wing,
particularly during migration.
Scott O’Keeffe
-----Original
Message-----
From:
[On
Behalf Of Judie Peet
Sent: 08 March 2001 12:20
To: birding aus
Subject: [BIRDING-AUS] birds'
sleep requirements
G'day
Everyone,
Can
someone help please? I have been asked how it is that some birds can call
all night long, apparently doing without sleep.
This
started me wondering about migrating sea birds - I think I read somewhere that
they can, er, 'cat-nap' on the wing. Is this correct? Do birds sleep so
lightly that they have catch-up naps all through the day or night?
Help!!!
Judie
Peet (Dubbo)
(The
only thing certain about birdwatching is that nothing's certain.)
