Re: Bird Migration

Subject: Re: Bird Migration
From: "Frank O'Connor" <>
Date: Wed, 27 Aug 2003 23:23:54 +0800
At 18:03 27/08/2003 +1000, Michael Todd wrote:
I agree that it is amazing that dispersing birds seem to know where they are going are at least have the knack of heading out to sea and finding land. However, cattle egrets are relatively capable birds when it comes to long distance flight.

What I think is truly amazing is how birds like rails (one of the most successful bird families at dispersing to islands) have managed to do it. The chance of one rail dispersing across a couple of thousand kilometres of ocean and hitting land and surviving must be small. So how unlikely is it that more than one rail can do it within a short enough timeframe for them to be able to breed and start the seed of a new population and in time a new species. This has to be one of the miracles of the natural world...... well I think so anyway.

It has amazed me that Little Bittern and Little Grassbird are becoming established in Kununurra since the late 1980's or early 1990's, a long long way from the previous known location.

It looks like Masked Lapwings may be about to become established in the south west, but perhaps this species travels in small groups? I would have thought that Cattle Egrets may also travel in groups?

Frank O'Connor           Birding WA
Phone : (08) 9386 5694              Email : 

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