Brown Gerygones- odd habitats in Vic.

To: <>
Subject: Brown Gerygones- odd habitats in Vic.
From: "George Appleby" <>
Date: Mon, 22 May 2006 20:11:06 +1000
Hi all

The recent discussions about Brown Gerygones in NSW has some interesting 
parallels in Victoria.

Brown Gerygones have been recorded in what would normally be considered unusual 
habitat in Victoria for several years. In summer 1997-98, they inhabited 
gullies with some of the minor species typical of Cool Temperate Rainforest or 
Wet Forest in West Gippsland. Before this, there were a couple of records from 
West and South Gippsland in similar habitats. The Atlas of Victorian Birds 
(1987) mainly noted these birds from lowland (Warm Temperate) rainforests in 
East Gippsland and the adjacent plains. Within this "traditional" range, I and 
others have recorded them in creekline vegetation often dominated by a tall 
form of Kunzea ericoides (?) and other species of riparian scrubs. In addition, 
I've got a recent record from Coast Banksia Woodland (with a large 
vine/epiphyte component) on the Gippsland Lakes.

There are also recent records from around Melbourne; a least a couple are from 
the Cool Temperate Rainforest/Wet Forest vegetation but there were two records 
from the lower Yarra, presumably both in River Red Gum and Black/Silver Wattle 
dominated vegetation.

It seems that Brown Gerygones have consistently expanded their range westward 
and diversified their habitat choice in the past decade or longer. In their 
previous range, they are using drier habitats as is shown in NSW but in 
contrast, many of these records are from summer. The habitats further west are 
on average drier and possibly more open, and have been used in different 

These trends make me ask: are these birds expanding their range because of 
habitat changes or an increasing population in their "normal" range?  Is this 
climate change at work?



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