Unusual feeding congregations

To: "Con Boekel" <>
Subject: Unusual feeding congregations
From: "Philip Veerman" <>
Date: Mon, 26 Mar 2007 17:03:55 +1000
You wrote: "The proportion of whistlers is unusual on Black Mountain. Normally I see more Rufous than Golden whistlers."
That depends on the season. Both Whistlers are migrants in Canberra. In warmer months it will be true that: "I see more Rufous than Golden whistlers". In contrast, in cooler months it will be true that: "I see more Golden than Rufous Whistlers". Autumn and Spring are changeover times. Simple. Also these mixed species flocks occur more often in Autumn and Winter than other seasons.
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