>Incidentally, are the Rhino Auklets that are carrying fish in their
>beaks at the end of the day the only ones taking food back to
>nestlings? If a Rhino is flying home at the end of the day with no
>fish in its beak, does that imply that a brood will go hungry that
>night?

At protection island (Ulrich Wilson) most young fledge during August and
adults no longer bring food to the burrows. He also reports a large number
of non-breeding birds. Perhaps one of these explains your fishless birds.
Michael Kennedy <mikken at daka.com>
Port Townsend, WA, USA