[canberrabirds] Why are the C. Sparrowhawk & B.Goshawk so similar?

To: "David Adams" <>
Subject: [canberrabirds] Why are the C. Sparrowhawk & B.Goshawk so similar?
From: "Greg and Val Clancy" <>
Date: Sat, 12 Jan 2013 10:01:47 +1100
My understanding is that the white morph of the Grey Goshawk was able to survive in a forest situation where it stands out like the proverbial because it resembles white coloured cockatoos. I don't know if there is any science behind that claim though.

Dr Greg. P. Clancy
Ecologist and Birding-wildlife Guide
PO Box 63 Coutts Crossing NSW 2460
0266493153 0429601960

-----Original Message----- From: David Adams
Sent: Saturday, January 12, 2013 9:26 AM
To: David Adams
Cc: COG line ; Birding-Aus
Subject: [canberrabirds] Why are the C. Sparrowhawk & B.Goshawk so similar?

An all white raptor in the forest?

John Leonard wrote to mention the White Hawk, an unusual New World forest

Despite often being nearly all white, these birds seem to be doing pretty
well for themselves over a huge area. The behavior section at the Cornell
site is interesting. it sounds like these birds follow around parties
of monkeys (arboreal foragers) and coati (ground foragers - relatives
of Raccoons) pouncing on whatever prey is flushed. Perhaps their coloration
is not selected for/against as they're opportunistic feeders? No's always easy to make up an evolutionary/ecological story...but
that doesn't make it true.


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