Barb and all,
Check out the recordings of the Canada goose, Cackling Goose, and
Aleutian Canada Goose on my Stokes Field guide to Bird Songs: Western
Region CDs. So far I've been fortunate enough to have anticipated all
the species splits that have occurred since our 1999 publication date.=20
The different geese definitely sound distinct. You will want to read
the booklet as you listen to the track as all the geese are presented
on one track but each distinct from the others.
Kevin Colver
On Thursday, October 7, 2004, at 10:31 AM, Barb Beck wrote:
> A Challenge to the group:
>
> David Sibley has an excellent discussion of the present knowledge on
> the separation of the newly split Canada and Cackling Geese
> http://www.sibleyguides.com/canada_cackling.htm.=A0
>
> The thing that caught my eye in Sibleys report was that there might be
> significant differences in voice between the subspecies.=A0=A0 All of us=
> who have spent time around the smallest versions of the Cackling Goose
> know how very different its voice is from the very large forms of
> these geese but can voice be used to separate accurately all of the
> ssp??=A0 or=A0 spearate at any rate the group that is now (at least for a=
> while) classed as Canada Goose vs that now classed as Cackling Goose
> in the field?=A0 Sibley points out that this may not be possible but I
> wonder if this group can come up with good field id vocalization clues
> before the bino guys can come up with them or better ones than they
> come up with..=A0
>
> Do any of you have any comments or vocalizations of known ssp that you
> would be willing to share.=A0 If anybody has been on the breeding
> grounds the ssp of where the recording was made is a pretty good
> indication=A0 would help.=A0 I personally know little about the
> vocalizations of most of the subspecies of these geese and only have
> recordings of our local birds=A0 but I wonder if the collective brains
> and resources of this group can either solve or put a big dent it.
>
> Barb Beck
> Edmonton Alberta Canada
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
> "Microphones are not ears,
> Loudspeakers are not birds,
> A listening room is not nature."
> Klas Strandberg
>
>
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>
>
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>
> Yahoo! Groups Links
>
> =95 To visit your group on the web, go to:
> http://groups.yahoo.com/group/naturerecordists/
> =A0
> =95 To unsubscribe from this group, send an email to:
>
> =A0
> =95 Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
>
[Non-text portions of this message have been removed]
________________________________________________________________________
________________________________________________________________________
"Microphones are not ears,
Loudspeakers are not birds,
A listening room is not nature."
Klas Strandberg
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