Hasties Swamp Pochards and Occam's Razor

To: Birding_Aus <>
Subject: Hasties Swamp Pochards and Occam's Razor
From: Carl Clifford <>
Date: Mon, 27 Oct 2014 14:12:50 +1100
I have been following this thread and it might be time to apply Occam's Razor. 
To begin: 
1. The most southerly records of RCPs are of vagrants in Thailand (IUCN Red 
2. It is a long flap for a duck from Thailand, let alone the normal southern 
most range in SE India.
3. The odds of a single bird arriving in NE Australia, based on the above are 
very, very slim.
4. The odds of a pair arriving in NE Australia are verging on astronomical.
5. Red Crested Pochards are found in water fowl collections in Australia.

Based on the above, I think that we would have to regard the Pochards at 
Hasties Swamp as escapees or releases, not vagrants. It would be interesting to 
see if these birds have leg bands. 

Carl Clifford
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