Oregon's First Louisiana Waterthrush 31 Cindy and John Lawes Yellow-Breasted Chat Sightings Needed 33 a Productive Year in Mario
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Vol. 25, No. 2, Summer 1999 The quarterly journal of Oregon field ornithology Oregon's First Louisiana Waterthrush 31 Cindy and John Lawes Yellow-breasted Chat Sightings Needed 33 A Productive Year in Marion County: The Benefits of a Big Year County Listing Effort 34 Steve Dowbzn Oregon Birds Needs Photos 36 m Polk County Big Year 37 ife^H Bill Tice In Memoriam: Margaret Markley. 39 Alan Contreras Updated Priorities for Atlasing in 1999 40 PaulAdamus Web Administrator Needed 41 North American Migration Count 41 Field Notes: Eastern Oregon 43 Paul Sullivan Field Notes: Western Oregon 50 JeffGilligan 1999 Oregon Shorebird Festival. 57 Wilson's Plover Photo by Skip Russell CENTER: OFO Membership Form Oregon's first ilson's Plover • OFO Bookcase • Oregon Rare Bird Phone Network Oregon Birds is looking for material in these categories: Oregon Birds Features. Longer articles dealing with the status, distribution, identification, Oregon Field Ornithologists ecology, taxonomy, behavior and other Box 10373 aspects of the birds of Oregon, includ• Eugene OR 97440 ing the history of Oregon ornithology. These typically cite references at the end OFO Website: www.cyber-dyne.com/-lb/ofoweb.html of the article. President Ray Korpi, Portland (1999) Secretary Mary Anne Sohlstrom, Hillsboro (1999) Short Notes. Similar subject matter as Treasurer Reid Freeman, Eugene (1999) Features but typically less than a page in Directors Chuck Gates, Powell Butte (1999) Ted Ernst, Corvallis (1999) length and with few citations, those cited Vjera Arnold, Springfield (2000) in the text. Tom Winters, John Day (2000) Bird Finding. Various lengths and for• Editor Ray Korpi mats, dealing with finding a specific spe• Design/Layout Barbara Gleason cies in Oregon or with the birds to be Archives Paul Sullivan found at a given location. OFO Sales Lucy Biggs Reviews of books or other published Oregon Bird Records Committee material that deals with birds of Oregon. Members Term Ends Alternates (1999) Photos taken of birds in Oregon, Tom Crabtree 2000 Craig Miller, David Bailey, Steve Dowlan, Tim Colin Dillingham 2000 Janzen, Craig Corder, Bill Tice. whether for use as part of the Field Notes JeffGilligan 2001 reports or not. Please be sure photos are Jim Johnson 2001 properly labeled. See page 36. Gerard Lillie 1999 OBRC Secretary Larry McQueen 1999 Harry B. Nehls, 2736 SE 20th Ave. Portland, News briefs. These are usually events Craig Roberts 2001 OR 97202. Skip Russell 2000 (503) 233-3976 <[email protected]> or announcements of temporal impor• Owen Schmidt 1999 tance that will not be repeated. To get In touch with us directly... Oregon Birds OFO Board OFO Birding Weekends P.O. Box 10373, Eugene OR F440 Ray Korpi, President Paul T. Sullivan 503-289-1676 4470 SW Murray Blvd #26. OBRC [email protected] Beaverton OR 97005 Harry Nehls. Secretary Reid Freeman, Treasurer 503-646-7889 2736 SE 20th Ave., Portland OR 54l-343-748c\ [email protected] 97202 . [email protected] 503-233-3976 OFO Publications [email protected] Deadline for the September issue of Luw Biggs Oregon Birds is 20 July 1999. 86701 1/2 Franklin, Eugene OR 97405 lb@q'ber-dyne.com Oregon's First Louisiana Waterthrush Cindy and John Lawes, 13380 SW Burner Road, Beaverton, OR 97005 Circumstances of us observed the bitd for 15 minutes, at which point We left Beaverton late Thursday morning, 26 Novem• John and Deb left to retrieve the car. I continued to ber 1998. In hopes of walking ourselves into a proper observe the bird for an additional 20 minutes. For over state of pre-Thanksgiving-Dinner hunger, my husband 35 minutes I followed the small bird as it foraged through John, our mutual friend Deb Gellar, and I visited Silver the tangled brushy area, up the path to the footbridge Falls State Park. until it doubled back towards the trail junction. At this point, I stopped following the bird; I had made as many Rising to 1,500 feet above sea level, Silver Falls is a well- mental field notes as I could, and did not want to fur• known natural area in Marion County, Oregon. The steep ther disturb what I now suspected was a good find. We canyon, and the many spec• had no field guides with us; tacular falls that give the park however, we believed the its name, have been created by bird to be a Waterthrush. Silver Creek's erosion of the Even a Northern Water• basalt that forms the sur• thrush would be an unusual rounding western foothills of Oregon Birds needs YOUR photos bird for this time of year! the High Cascades. The park's thick forest canopy is largely We left Silver Falls at about 1:45 pm, stopping at the first composed of mature second- If someone had taken a photo telephone along Highway growth Douglas Fir, Western and sent it to us, 214 to call Maeve Lofton Red Cedar, Western Hem• you would have seen and Paul Sullivan. Rousing lock, Bigleaf Maple, and Red a Louisiana Waterthrush here! Alder, festooned with epi• them from Thanksgiving phytes such as Old-man's- dinner, I described the bird beard, clubmosses and Or• See page 36 for details on submitting to Paul who suggested we egon Lungwort. The dense photos to Oregon Birds! might have seen a Louisiana understory plants include Waterthrush. I asked him to Sword Fern, Vine Maple, post a message to OBOL and Salmonberry, Oregon Grape, to call Salem birders. We and Salal. would post a more detailed description as soon as we got We parked at the Winter Falls trailhead and began walk• home. All the way back home we discussed the bird with ing the trails at about 11:00 AM. The day was overcast enthusiasm - to the distress of our non-birding friend with a few meager sun breaks and occasional showers. Deb who had never before seen us in the throes of full The thermometer in my car showed 43 degrees Fahren• birding frenzy. She asked if there was "help" for people heit. We wandered through the canyon for several hours, like us. We both replied "Birder's Night!" encountering a total of five bird species, the highlight of the day being a Brown Creeper seen near the trailhead. On the morning of Friday, 27 November 1998, Steve Our wandering led us finally to North Falls, where Sil• Dowlan and Paul Sullivan confirmed the identity of ver Creek plummets 136 feet over a massively undercut Oregon's first Louisiana Waterthrush. Numerous birders basalt cliff. At about 1:00pm we started up the stone observed the bird, which stayed until 30 November. A steps to the junction of the Winter Falls trail. cold wave, which began Tuesday, 1 December, displaced the waterthrush, which could not be relocated. Just as I was about to turn right at the top of the steps, I noticed a small (passerine-sized) bird moving about on the gravel path to our left, further down the trail to• Description wards the North Falls parking lot. Several features struck The "jizz" of the bird immediately suggested a ground- us: the bird's distinctive bobbing; and two field marks, a walking warbler, particularly a waterthrush. Field marks bold white supercilium and buffy flank patches. All three included the following: The head appeared gray brown, Oregon Birds 25(2): 31, Summer 1999 LOUISIANA WATERTHRUSH with white supercilia extending over the eye towards the northwest Florida, west to eastern Texas, up through back of the head. The supercilia were of uniform thick• eastern Nebraska, Iowa, central Minnesota, northern ness over the eye, broadening slightly (about 11/2 times Wisconsin, central Michigan, and into southern Ontario. the thickness at the eye) behind the eyes. The impres• The winter range includes northwest Mexico (to north• sion conveyed was of a striking white eyebrow that be• ern Sonora State) and northeast Mexico (to southern came "wedge-shaped" to the rear. When the head was Nuevo Leon and southwest Tamaulipas), Panama, the viewed from behind, both supercilia could be seen ex• Bahamas, and the Greater Antilles islands. Louisiana tending along the sides of the head, but they did not Waterthrush is found nearly annually in southeastern meet in the back. The upper cheek was gray brown just Arizona and southern Florida in winter (Dunn and under the eye, fading to buff malar stripe and a brown Garrett, 1997). There are no previous records for Or• sub-malar stripe. The chin was a buff color with no egon or Washington and only 8 records for California streaking. The eye was dark. over the ninety-year period from 1908 to 1997 (Roberson and Patten, 1997). The bill was dark and slender. It had a straight lower mandible with a slightly tapered upper mandible. The Preferred habitat includes clear, fast flowing, rocky bill size was larger than typical warbler bill, about 1/3 of streams with forested edges. A ground feeder, it bobs head length. No vireo-like spike or "hook" at tip of up• the body with a distinctive circular motion. The most per mandible. prominent features of this waterthrush include the buffy, orange flank patches; white supercilium that flares be• The back and wings were overall brown to light grayish hind the eye; and bubble-gum pink legs. It is most often brown, fading to brown towards wings and tail. The confused with its close relative, the Northern Water• wings were plain and without barring, the same tone of thrush {Seiurus noveboracensis). A comparative discus• brown as the back. sion with similar species follows. The underparts were a buffy, cream coloration found on the chest, belly, between the legs and vent.