[TN-Bird] Re: Mute Swan
- From: "Richard Knight" <rknight8@xxxxxxxxxxxxx>
- To: "tn-bird" <tn-bird@xxxxxxxxxxxxx>
- Date: Tue, 4 Feb 2014 16:39:15 -0500
OK, I'll buy that.
Rick Knight
----- Original Message -----
From: Jon Mann
To: csloan1973@xxxxxxxxx;Rick Knight
Cc: tn-bird
Sent: 2/4/2014 3:04:56 PM
Subject: [TN-Bird] Re: Mute Swan
And the timing is perfect for a Mute Swan from the Great Lakes population - the
same deep freeze that has pushed all the White-winged Scoters and Long-tailed
Ducks would likely push Mute Swans down as well.
I just looked at ebird for December and then January. December shows 90% or
so of sightings concentrated close to the Great Lakes, with some in the
interior of Ohio
January shows a wave of sightings extending all through-out Indiana, Ohio and
into KY.
Jon Mann
Scottsdale, AZ
On Tuesday, February 4, 2014 12:42 PM, Chris Sloan <csloan1973@xxxxxxxxx> wrote:
I was referring to the Great Lakes population. I am not sure we disagree that
much. My point is just that, absent some particular reason to believe an
individual was a released pet, in my opinion they are more likely than not to
be dispersed from the established populations. Obviously, in your area, many
are known to be released. Around here, there aren't that many.
Chris Sloan
Nashville, TN
http://www.chrissloanphotography.com/
On Tue, Feb 4, 2014 at 1:25 PM, Richard Knight <rknight8@xxxxxxxxxxxxx> wrote:
I disagree, but depending on what you mean by "established wild population".
To my knowledge there are only some feral (i.e., formerly domestic) Mute Swans
that breed in Tenn., but none that I would consider wild & established in the
state.
Also, there have been some that appeared to be dispersers from the established
Great Lakes population, although that is nearly impossible to prove. Maybe
the
individual at Old Hickory Lake fits this category.
Most Mute Swans in northeast Tenn. are known to be birds that were placed on
lakes or ponds by people. Some can fly, some apparently can't. Some have
successfully raised young, but that doesn't make them an established wild
population.
Rick Knight
Johnson City, TN
----- Original Message -----
From: Bill Pulliam
To: Chris Sloan
Cc: TN-Birds bird
Sent: 2/4/2014 12:06:05 PM
Subject: [TN-Bird] Re: Mute Swan
Thanks. I have been unsure how to treat eBird reports of these birds.
Fortunately eBird reviews are easy to revisit as the circumstances and
consensus shifts.
Bill Pulliam
Hohenwald TN
On Feb 4, 2014, at 10:44 AM, Chris Sloan wrote:
I have two comments on this.
First, as to this particular bird, it's almost certainly part of the
established wild population. I have birded Old Hickory Lake as much or more
than anyone over the last 20 years and have never seen one (including Saturday
afternoon), and it's a hard bird to miss.
Second, I generally assume that reports in TN are from the wild population
unless there is evidence to the contrary. There are enough of them in the wild
population and enough records of presumed wild birds in TN that it seems to me
the burden of proof should lie the other way. Others may disagree.
Chris Sloan
Nashville, TN
http://www.chrissloanphotography.com/
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