Crimson Rosellas chick mortality

To: 'Michael Lenz' <>, 'B&RGraham' <>
Subject: Crimson Rosellas chick mortality
From: Philip Veerman <>
Date: Tue, 24 Dec 2019 10:42:44 +0000

My suggestion “The Crimson Rosella parents could have died (from predation or whatever)……..” is based on this quote: “After a week or so of no activity”. If the chicks had died first, whilst the parents were still trying to feed them, I would expect the parents still to visit for a while and to be quite noticeable about it. That quote suggests to me that the parents stopped coming, most likely due to being dead, which would result in death of the chicks. It doesn’t need for both to die. The mother does most of the feeding, if she died, then the father could abandon it, if it too difficult.


Also if the problem is reduced food, then it is more likely that one or two but not all chicks die, and not at the same stage but at different stages, as they would probably try to keep one going for longer or one be better at competing for food.




From: Michael Lenz [
Sent: Tuesday, 24 December, 2019 2:52 PM
To: B&RGraham
Cc: chatline
Subject: Re: [canberrabirds] Crimson Rosellas chick mortality


Thanks Bill for forwarding these observations.


My guess is that food shortage rather than heat may have led to the demise of the young Crimson Rosellas. The adults could not meet the food demands of the growing young.


In general, to date I have seen very few young rosellas (either species) and also only very few young Galahs.  

Michael Lenz


On Tue, 24 Dec 2019 at 12:08, B&RGraham <> wrote:



Here is a report of chick mortality that has occurred in the hot conditions. Report attached.


best wishes,




<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 Canberra Ornithologists Group 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 list contact David McDonald, list manager, phone (02) 6231 8904 or email . If you can not contact David McDonald e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU