canberrabirds

Where have the Whiteface gone? Eastern Yellow Robin

To: "'wallaces'" <>, <>
Subject: Where have the Whiteface gone? Eastern Yellow Robin
From: "Philip Veerman" <>
Date: Fri, 25 Jan 2013 22:47:36 +1100
Maybe or maybe not. It shows a divide between a higher and a fairly even
lower period. Before reaching any such conclusion (slow, but steady, decline
in the reporting rate for Eastern Yellow Robin), I suggest we would need to
rule out the maybe obvious idea that it possibly simply shows a higher
recording rate, during the COG Atlas project, due to relatively more effort
then devoted to forest areas outside suburban Canberra (that took a couple
further years to dwindle). This species is fairly intolerant of suburban
Canberra (The GBS Report) and likely this bias alone could cause such an
impression.

Philip

-----Original Message-----From: wallaces  Sent:
Friday, 25 January 2013 7:25 PM To: 
Subject: Where have the Whiteface gone? Eastern Yellow
Robin


Another species to think about - the attached graphic shows the slow, but
steady, decline in the reporting rate for Eastern Yellow Robin.

Steve




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