Laurence Sheldon wrote:
> maryann kolb wrote:
>>
>> On Mon, 30 Jun 2008 18:55:01 -0700 (PDT), carol
>> <cghappyfeet@[EMAIL PROTECTED]
> wrote:
>>
>>> I use to see alot of chickadees here in Colorado during the winter and
>>> now none. Will they come back this coming winter? Still have a few
>>> gold finches!
>>
>> Most birds become much more territorial and spread out at nesting
>> time. During the winter they form small mixed flocks and forage for
>> food and are much easier to see and hear.
>
> Agree with that, but think there may be more to the story (that I don't
> clearly understand).
>
> Until a few weeks ago we had lots of Chickadees, Nuthatches and Grackles
> (among others that are not of interest here). Now, few to none.
>
> If past years are a lesson, we will go through a couple of more cycles
> until cold weather sets in, then the Grackles will be gone until next
> spring, but the other two will continue to come and go.
>
> I'm guessing that "what else is available" and "variety" are factors
> somehow.
I meant to mention that "migration" is a possible answer. Some birds
(Canada Geese a striking example in this part of the world, Sandhill
Cranes another.) seem to "layover" for extended periods enroute.
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