Blue-winged Kookaburras and others

To: "Birding Aus" <>
Subject: Blue-winged Kookaburras and others
From: "Bill Jolly" <>
Date: Wed, 5 Sep 2001 12:21:35 +1000
We picked up more than a hundred species around the Lockyer yesterday
afternoon. Although we tried for the Blue-winged Kookaburras and the
Red-backed Kingfisher we didn't see either - but we did find Australian
Spotted Crake and Spotless Crake at two different ponds. John Hadley
mentioned he had 4 Baillon's Crakes at his 'home pond' the other day. Maybe
it's a case of waters dropping so low as to bring these birds out into view.
Latham's Snipe too.

Back to the Blue-winged Kookaburras.

I posted a question recently about the likely survival chances of an
isolated population. I got a couple of off-line responses, but I'd like to
repeat the question and ask anyone who has any thoughts on the matter to be
kind enough to drop me a note. I don't fully understand how these things
work, and I guess I'd like to think that there might be a direction ahead
for these Lockyer Valley Blue-winged Kookas other than down.

The earlier posting read:

I saw two Blue-winged Kookaburras at the traditional location near Lake
Clarendon on Monday.

Can anyone tell me what the prospects are for a species' survival in an
isolated location once it gets down to, a remnant population of say one
family of four or five birds?

Once a group reaches these low levels, is it likely that it can survive
through a couple of generations by siblings pairing, awaiting the off-chance
recruitment of new members?

I've read that laboratory matings of siblings of some small vertebrates have
continued through many (10 or 20) generations sometimes with only quite
small genetic hiccups along the way.

Would anyone on the list care to offer some insight into the future
prospects for this isolated group of Blue-winged Kookaburras?

Bill Jolly

Lockyer Valley, Queensland.

Visit our website at

Ph: (+61) 7 4697 6111  Fax: (+61) 7 4697 6056

Birding-Aus is on the Web at
To unsubscribe from this mailing list, send the message
"unsubscribe birding-aus" (no quotes, no Subject line)

<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