Re: Crested Pigeons

To: "birding aus" <>
Subject: Re: Crested Pigeons
From: "Philip A. Veerman" <>
Date: Mon, 28 Jul 2003 17:50:26 +1000
Crested Pigeons are now an abundant urban bird in Canberra. In 2001-02, they reached number 13 in the list of all species ranked by abundance (from 2463 observer weeks of data). They were rare here (and initially required rarity forms to be endorsed by COG's rarities panel) until about 1989. What is interesting is that since year 18 to year 21 of COG's GBS, (1998-99 to 2001-02) their population has started to stabilise (i.e. stopped increasing). The graph of their population change is so smooth, it is a lovely sight in biology. (All details from my book "Canberra Birds: a report on the first 21 years of the Garden Bird Survey.") The Spotted Turtle-doves are still rare and restricted here. Where they do occur, the two species appear to feed together.
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