The full answer about the reluctance of Cayuga and especially Seneca to 
completely freeze over is a bit complicated, but a primer on the physical 
limnology can be read here:

http://www.gflrpc.org/Publications/SenecaLakeWMP/chap6a.pdf

-Geo Kloppel

On Feb 9, 2014, at 7:20 AM, "Liisa S. Mobley" <ls...@cornell.edu> wrote:

> There's been a bit of discussion about the Finger Lakes freezing over, as 
> well as the Great Lakes, on the Cayuga Birds list in recent weeks.  I came 
> across this article from one of the channel 9 (Syracuse) weathermen, which 
> indicates that the Great Lakes, as of last Friday, had more than 79% of their 
> surface area frozen.  
>> Great Lakes Freezing Over: Dave Eichorn's Blog
>> http://bit.ly/1gcubdX
> 
> Where do all the birds go?  Lake Ontario is only about half frozen, so maybe 
> they go there.
> 
> You'll notice in the photo that Cayuga and Seneca are not frozen.  Not sure 
> why they don't freeze over, too.  And, no, they are not deeper than the Great 
> Lakes, except for Erie.  (This is kind of bugging me, so let me know if you 
> have a good answer!)
> -Liisa
> 
> Liisa Mobley
> Sent from my iPhone
> 
> 
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