The yearly fluctuation in siskins can be seen in this analysis
of Portland and Sauvie Island CBCs in Oregon.

http://home.pacifier.com/~mpatters/cbc/finch/pisi_port.GIF

These can be compared with siskin numbers elsewhere at

http://home.pacifier.com/~mpatters/cbc/finch/finchfm.html

Robert Sundstrom wrote:
>
> Tweets,
> On the continuing subject of "where are the siskins"?, I have been seeing
> some impressive numbers in the lowlands.
> I had a flock of over a hundred in my yard in West Seattle two days ago, and
> 15-20 today. Saw a large flock of 200 or so on the Skagit Flats in an alder
> stand on Nov. 15. Still looking for a first backyard redpoll. Watch those
> alders.
> Bob Sundstrom
>

--
Mike Patterson The common view of science is that it is a sort of machine
Astoria, OR for increasing the race's store of dependable facts.
mpatters at oregonvos.net It is that only in part; in even larger part
it is a machine for upsetting undependable facts.

----- H.L.Mencken
http://www.pacifier.com/~mpatters/bird/bird.html