[CT Birds] Trumpeter countability -- my take
mswanhall at earthlink.net
Tue Mar 30 16:57:57 EDT 2010
Perhaps the only real way to tell if these trumpeter were from Ontario is to collect a blood sample or other tissue sample then do the same for known swans from Ontario and compare DNA. It works on paternity suits, criminals, etc - would it work on swans - if obviously it was feasible?
Where are Abby and Gibbs when you need them?
Marty from Woodbury
>From: Jamie Meyers <ctredbird2 at comcast.net>
>Sent: Mar 30, 2010 4:42 PM
>To: ctbirds <ctbirds at lists.ctbirding.org>
>Subject: [CT Birds] Trumpeter countability -- my take
>Folks, I like a good listing discussion as much as anyone. It seems as though much of the discussion has assumed that these birds are from Ontario -- but what if they are not? What if they're really from the Michigan population, which is well established from a reintroduction program that started at least far back as the late 1980's? Trumpeters have been countable in MI for several years now. Or for the sake of argument, even though it's unlikely they're from a far western population, how do we know for sure that these are not?
>I guess we'll never really know for sure since these birds are not marked and thus their true origin cannot be traced. For that reason, I personally would need more convincing to count these particular birds. At least the Pink-footed and Barnacle Geese which we count seem more likely to have originated from wild and very established populations, based on best reckoning anyway.
>If from Ontario, these birds are from a population that hasn't totally proven itself to be established, IMHO, regardless of historical distribution of the species. The Ontario birds could follow in the Thick-billed Parrot's footsteps in AZ and fail to reestablish themselves, or be like Wild Turkeys and be sitting in every other pond we look at 30 years from now. We just don't know. If someone proved that these birds were from Michigan or points west then I'd be Stratford-bound in a jiffy.
>Canton, CT, where we would happily enjoy any black-billed swan
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