birding-aus Re: an addendum on migration

Subject: birding-aus Re: an addendum on migration
From: Mark Chappell <>
Date: Wed, 5 May 1999 16:17:51 +1000
>Re: Mark Chappell's comments, it and previous comments raise a few
>questions for me -
>Birds during migration can cover 4,000 (or perhaps even more) kilometres -
>what mammal/s could do that?  I know marathon runners can keep going for
>several days so maybe it's just a question of keeping fit.   Which birds
>have to do all the time otherwise they are dead.

*** In my last diatribe I forgot to mention that the longest mammal
migration I know of is that of the gray whale, which goes between Mexico
and the Arctic Ocean near Alaska (many thousands of kilometers).  But this
isn't really comparable to nonstop bird migration, since the whales make
the journey in months and are able to stop, rest, and eat on the way.  The
movements of many southern hemisphere whale species between Antarctic
waters and temperate/tropical oceans are comparable, and it's recently been
discovered that male northern elephant seals make a trip similar to that of
gray whales, but they do the entire trip twice each year (!).
-- Mark C

       Mark Chappell, Biology Department, UC Riverside
              until Aug '99:  C/O Dr. Bill Buttemer
       Dept. Biological Sciences, University of Wollongong
       Wollongong NSW 2522 AUSTRALIA

To unsubscribe from this list, please send a message to

Include ONLY "unsubscribe birding-aus" in the message body (without the

<Prev in Thread] Current Thread [Next in Thread>

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the birding-aus mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU