Date: 10/13/18 9:20 am From: Wayne Weber <contopus...> Subject: [obol] Re: Large flock of Dippers detected at Force Lake
Bob and Oregon Birders,
Actually Dippers are somewhat migratory, at least in British Columbia where I am familiar with them. They don’t migrate far, but they migrate up and down many of their nesting streams (although there may be some birds that occupy the same area year-round). On many streams, they nest in headwaters areas which are frozen solid in the winter, and may move 30 or 40 miles downstream for the winter. They certainly show up on many streams from October through April in lower reaches where they are never seen in the summer. They also show up occasionally on lakeshores wherever there is suitable food.
Another bird which isn’t usually thought of as migratory is the Mountain Quail. In the Sierra Nevada, they are said to move upslope in the spring and downslope in fall, as much as 20 or 30 miles. This is a bird which rarely flies, so this migration is accomplished almost entirely on foot. Some of the breeding areas are under several feet of snow in the winter.
No, this kind of movement is not what we usually think of as migration, but such short-distance movement from summer to winter definitely come under the heading of migration.
Lars, good pun— it was guaranteed to attract some attention!
Wayne C. Weber
From: <obol-bounce...> [mailto:<obol-bounce...>] On Behalf Of Robert O'Brien
Sent: Thursday, October 11, 2018 9:56 PM
Cc: <larspernorgren...>; obol
Subject: [obol] Re: Large flock of Dippers detected at Force Lake
Spoiler alert. Upon reading the original post, Which I thought was absolutely unprecedented, I resolved to research Dippers in Birds of North America. Bummer but I guess you saved me some wasted time. As far as I know Dippers are mostly non migratory. Quite happy on Mountain Streams that are patially frozen over
On Thursday, October 11, 2018, Steve Jaggers <sjjag...> wrote:
> At the risk of over explaining-for those on this list who are less familiar with esoteric birding terms.
> A person "dips" on an effort to see a particular bird when unsuccessful in that pursuit.
> Thus Lars' flock of dippers-those who missed the ruff this morning.
> Unruffled was a clever clue.
> Loving the word play.
> Steve Jaggers
> On October 11, 2018 at 8:45 AM Lars Norgren <larspernorgren...> wrote:
> 9 or 10 at once. As the forlorn leave, they are replaced by other optimists. 2 Greater Yellowlegs the only shorebirds when I parked. Beautiful morning, well worth the visit, however unruffled.