|
1997 (Third) Report of the Sacramento Bird Records Committee
The Sacramento Bird Records Committee (SBRC) reviews records of unusual birds reported within the boundaries described by the Checklist of the Birds of the Sacramento Area (published by Sacramento Audubon Society; most recently revised in 1993). Current members of the SBRC are Ted Beedy, Bruce Deuel, Ed Greaves, Ed Harper, Jeri Langham, Tim Manolis, John Trochet, and David Yee.
Bird species, reports of which the SBRC accepts for review, include those previously unreported for the area, those listed as of accidental occurrence on the Checklist, and certain other species of casual occurrence or difficult to identify, indicated on the Checklist by asterisks (see the Checklist for details). The SBRC also reviews records for the small bit of Sacramento County that lies south of the southern boundary of the Checklist (Highway 12) and, occasionally, records from just outside other area boundaries. The committee also evaluates records of unseasonable occurrence, such as reports of birds found on local Christmas Bird Counts (e. g., Yellow Warbler, Hooded Oriole, Ash-throated Flycatcher) which are normally present locally only in summer or on migration. Copies of all records received are filed (following review) at both California State University, Sacramento, and American River College, and are accessible to the public.
This article presents the committees decisions since December 1995 and as of April 1997. Of the 53 records reviewed, 40 (75%) have been accepted, 3 (6%) not accepted, and 10 (19%) have been held over for recirculation because of split votes (votes of 8-0 or 7-1 constitute acceptance; votes of 6-2, 5-3, or 4-4 trigger recirculation; votes of 3-5 or less constitute non-acceptance). The number in parentheses preceding a record listed below is the record number, and indicates when the record was received (e. g., number 24-86 was the twenty-fourth record received in 1986).
The SBRC sincerely thanks all those observers who have submitted reports. Dont be discouraged if you dont see your submitted observation(s) here; well get to them all eventually.
Tim Manolis
REPORTS ACCEPTED
Garganey -- (16-88), a male at the Woodland Sugar Ponds, 19 June 1988 (a sighting of [presumably] the same bird on 26 June may be correct, but has not been documented).
This, a first record for Yolo County and the Checklist area, required two circulations. The identification, exhaustively documented and including a good photograph, was never in doubt, but concerns had been raised about captive origin and the late date (most California records of this Eurasian teal are for periods of migration, particularly spring). The SBRC decided to await the review of the California Bird Records Committee, which eventually accepted the record. After reviewing the CBRC decision, the SBRC also accepted the record.
Eurasian Wigeon (25-87), a male at Bass Lake, El Dorado Co., 13 December 1987; (6-88), a male at Upper Beach Lake, Sacramento Co., 22 and 28 January 1988; (15-90), a male in the Yolo Bypass just north of Interstate-5, Yolo Co., 22 December 1990; (37-92), a male on Camanche Reservoir, San Joaquin Co., 28 December 1991.
This species has proven to be a regular winter visitor to the area in small numbers, which seem to have increased a bit in recent years. It was removed from the list of species reviewed by the SBRC as of the 1993 Checklist.
Greater Scaup -- (28-86), a male at the Woodland Sugar Ponds, Woodland, Yolo Co., 14 March 1986.
Surf Scoter -- (12-89), a male on the American River approximately 3.5 mi. upstream from the confluence with the Sacramento River, Sacramento, Sacramento Co., 24 December 1989.
This is one of but a few records for Sacramento County, and the first to be reviewed and accepted by the SBRC.
Barrows Goldeneye -- (32-87), two males and one female along the American River near Cal Expo, Sacramento, Sacramento Co., 27 December 1987; (33-87), two males along the American River at the Highway 160 bridge, Sacramento, Sacramento Co., 27 December 1987; (18-88), a first-year male at the Woodland Sugar Ponds, Yolo Co., 2 April 1988; (28-88) a male along the American River near Cal Expo, Sacramento, Sacramento Co., 26 December 1988.
The December records were documented for Sacramento Christmas Bird Counts. Record 33-87 also made mention of the group of birds documented in record 32-87. Record 28-88 included mention of a female, but did not include a description of her. This duck is a regular part of the areas avifauna and is not typically a reviewed species.
Lesser Golden-Plover (Pacific or American) -- (18-87), one seen in the Yolo Bypass at Highway 16 (Trestle Ponds), Yolo Co., 9 August 1987.
Seen prior to the taxonomic split of Lesser Golden-Plover into two species, this bird was reported as the Pacific form. After two circulations, the committee felt this assessment was probably correct, but that the descriptive evidence was too incomplete to support it unequivocally.
Semipalmated-Plover (34-87), one in the Yolo Bypass at Highway 16 (Trestle Ponds), Yolo Co., 27 December 1987; (2-89), two in the Yolo Bypass north of the S. Fork of Putah Creek, Yolo Co., 26 December 1988; (10-89), one in the Yolo Bypass north of Interstate-5, Yolo Co., 22-23 December 1989.
This species is normally not reviewed by the SBRC. These reports were reviewed because they were unusual records for the Sacramento Christmas Bird Count.
Semipalmated Sandpiper (45-92), a bird at the Woodland Sugar Ponds, Yolo Co., 22 August 1992.
This appeared to be an adult in nearly complete molt to basic plumage. In this plumage Semipalmated Sandpiper is extremely similar to Rufous-necked Stint; fortunately, some observers of this bird were able to detect the semipalmated toes at close range.
Sanderling (19-88), one in juvenile plumage at the Sacramento Metro Airport Sewage Ponds, Sacramento Co., 6 September 1988.
This is the first record accepted for Sacramento County.
Western Gull (24-91), one at the Davis Sewage Ponds, Yolo Co., 18 December 1991.
This record, of a first-year bird, required two circulations. The first vote was 7-1, but the dissenting member suggested recirculation pending the publication of information concerning phenotypic variation in hybrid Western X Glaucous-winged gulls. Subsequent evidence suggested that the bird as described fell within the range of variation possible for Western Gull and reasonably could be assumed to have been one.
Sabines Gull -- (22-87), an immature bird at the Woodland Sugar Ponds, Woodland, Yolo Co., 16 October 1987.
A third record for Yolo County and the area, all in fall.
Common Tern (5-90), one at the Davis Sewage Ponds, Yolo Co., on 1 September 1991.
This is the first record for Yolo County and the area.
Bells Vireo (32-93), one at the Cosumnes River Preserve, Sacramento Co., 7 November 1993.
This record is remarkable for a number of reasons. This species formerly bred in the Sacramento Valley, but was apparently extirpated some time in the 1950s; this is the first report for the checklist area in nearly 20 years. The date is extremely late for northern California, especially for the Central Valley (perhaps the latest ever?). The bird was reported as Vireo bellii pusillus, the race breeding in most of California, but one committee member did not feel the description ruled out the very similar V. b. arizonae of the southwestern U. S.
Yellow-green Vireo -- (10-95), one at the Cosumnes River Preserve, Sacramento Co., 3 October 1994.
Yet another incredible vireo from the Cosumnes River Preserve (see Bells Vireo, above). Yellow-green Vireos are extremely rare anywhere in California, and this is apparently the first interior record for the north state, definitely the first for the Checklist area and Sacramento County.
Red-eyed Vireo -- (37-95), one, singing, along the American River Parkway near the Gristmill Access, Sacramento Co., 24 June 1995; (58-95), one at Sweetwater Creek, El Dorado Co., 11 August 1995.
These are the first records for the Checklist area and for the counties in question. The date of (37-95) was incorrectly reported by one observer as 30 June, which unfortunately found its way into print in Audubon Field Notes (49(5):978).
Virginias Warbler (34-93), one along the Mokelumne River 2 mi. west of Acampo, San Joaquin Co., from 26 November 1993 to 19 March 1994.
The first record for San Joaquin County and the area, this bird was extremely elusive. Presumably the same bird was present at the same site from December 1995 to January 1996, but independent documentation of the latter bird has not been submitted to the SBRC. Despite the gap of more than two years between sightings, the 1995-96 bird was considered the same one seen in winter 1993-94 by at least two people who saw the bird(s) in both winters.
Northern Parula (20-94), one along Cache Creek near Wodland, Yolo Co., 23 June 1994.
A singing male, apparently the second record for Yolo.
Palm Warbler (15-95), one at the Cosumnes River Preserve, Sacramento Co., 10 November 1993.
Black-and-white Warbler (55-95), one at the Cosumnes River Preserve, Sacramento Co., 2-25 November 1995.
American Redstart (57-92), one on the Spenceville Wildlife Area, Yuba Co., 5 September 1992; (60-92), one at Reichmuth Park, Sacramento Co., 16 December 1992.
Record 57-92 is perhaps the first for Yuba County.
Black-throated Sparrow (14-94), one along Meiss Road 1.6 mi. west of Ione Road, Sacramento Co., 9-11 May 1994; (28-94), four birds at the Spenceville Wildlife Area, Nevada Co., 28 May 1994 (one seen and heard there on 18 June).
Two of the birds involved in the Spenceville report were singing as if on territories; all four were in a small patch of Ceanothus chaparral. These records coincided with the incursion of unusually large numbers of Black-throated Sparrows into the northern part of the Great Basin during the spring and summer of 1994. Such incursions, occurring every 10-11 years, have produced similar small, ephemeral populations in patches of foothill chaparral in Butte and El Dorado counties.
Grasshopper Sparrow (11-94), one along Meiss Road 2.5 mi. from the junction with Dillard Road, Sacramento Co., 26 March 1994; (13-94), one along Meiss Road 2.9 miles from the intersection with Dillard Road, Sacramento Co., 7 April 1994; (17-94), one along Meiss Road, 1.3 mi. from junction with Ione Road, Sacramento Co., 9 May 1994; (26-94); at least two seen at the Spenceville Wildlife Area, Yuba Co., 23-28 May 1993; (27-94) one at the Spenceville Wildlife Area, Yuba Co., 13 May 1994; (30-94), one seen at the Cosumnes River Preserve, Sacramento Co., 2 July 1994.
A former breeding species in the Sacramento area that had gone unreported for decades, this sparrow returned to the local scene in 1993 and, in a big way, 1994.
Swamp Sparrow (3-94), one seen at the Spenceville Wildlife Area, Yuba Co., 13-15 February 1994; (6-94), one at Solano Lake, Yolo Co., 30 January 1994.
Record 3-94 is apparently the first for Yuba County.
REPORTS NOT ACCEPTED
Little Blue Heron (4-90), an immature bird at Gray Lodge State Wildlife Area, Butte Co., 9 August 1990.
This report is from slightly north of the Checklist area, but the SBRC decided to review it anyway. The report was circulated twice; the first vote was 5-3, the second, 0-8. The committees concerns centered on the possibility that the bird was a hybrid (possibly Little Blue X Snowy Egret), which was suggested by the color of the lores, described as yellowish. Indeed, the observer raised the possibility of a hybrid, citing a reported mating of Little Blue Heron and Cattle Egret (!) at nearby Colusa National Wildlife Refuge in 1989. Normally a hybrid would be a rarer find than a bird of either parental species, but Little Blue Herons are very rare in northern California and have been found hybridizing with other ardeids in the region on a number of occasions.
Indigo Bunting -- (25-94), a male and two females seen in Davis, Yolo Co., 1 August 1994 (the male) and 3-4 August 1994 (the two females).
On the first circulation, the committee voted 7-1 for the male and 3-5 to reject the females. Before the record of the male could be recirculated, the observer requested that the record be withdrawn, and the committee concurred.
Hooded Oriole -- (1-91), a male seen in south Sacramento, Sacramento Co., 20 December 1990.
This record circulated twice. The first vote was 6-2, but because of concerns raised by the two members voting against acceptance, the second vote was 0-8. In general, members felt the identification was possibly correct, but that the description was not conclusive.
The following observers kindly submitted reports evaluated herein: Stephen Bailey, Ted Beedy, Mark Cudney, Bruce Deuel, JoAnn Dick, Andrew Engilis, Jr., Gil Ewing, Ed Greaves, Steve Hampton, Ed Harper, David A. Holway, David Johnson, Gary M. Langham, Jeri Langham, Tim Manolis, Louise McCullough, Wayne Meyer, Barbara Mohr, Peter Perrine, Michael Perrone, John Ranlett, John Rombold, Rob Rombold, Kim Snipes, Jill Thompson, John Trochet, Bruce Webb, Brian Williams, and David Yee.
|
|
|