It's not just a "northern" expansion -- it's urban/suburban-specific
-- i.e., with human assistance only.


On Dec 18, 2007, at 3:06 PM, Cliff Drake wrote:

>> Overwintering in the Puget Sound area, at least in such predictable
>> numbers, is an artifact of our feeding them. And once you start, one
>> is therefor obliged to keeping up a good "hummer cafe".
>
>
> I'm not sure I believe either point. There are Anna's in my yard
> because
> I have a feeder out but if I didn't they'd just go down the block, not
> to Mexico or wherever. I just can't believe our use of feeders has led
> to the Anna's Northward migration. I had a 10 minute chase this morning
> around the house, lots of action in front of the windows. Pretty cool.
> ====================
> Cliff Drake
> Seattle WA (Ballard)
> cliff at cliffdrake.net
>
>