canberrabirds
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To: | "'wallaces'" <>, <> |
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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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