Yellow-green Vireo

Table

Yellow-green Vireo – Accepted
1. 29 Sep 1887	*	Riverside RIV	2004-584	14,30	specimen lost
2. 22–27 Sep 1964	HY	Dana Point ORA	1986-110	11
3. 23 Sep 1967	HY	Tijuana R. valley SD	1986-119	11
4. 07 Oct 1967	HY	San Diego SD	1988-122	14	ph., SDNHM 36247
5. 19–20 Sep 1974	HY	Tijuana R. valley SD	1980-141	6
6. 25 Oct 1976	HY	Tijuana R. valley SD	1976-100	3
7. 15–19 Oct 1977	AHY	Pt. Loma SD	1977-100	4
8. 13 Sep 1978	HY	Pt. Loma SD	1980-074	6
9. 22–25 Oct 1978	HY	Lake Merced SF	1978-110	5	ph., Roberson (1980)
10. 08 Sep 1979	HY	Gaviota SBA	1980-116	7
11. 30 Oct 1980	HY	Southeast Farallon I. SF	1981-005	7	ph.
12. 11–12 Oct 1982		Goleta SBA	1986-302	12	one of two reported
13. 19 Oct 1982	HY	Southeast Farallon I. SF	1987-107	11	ph.
14. 16–18 Sep 1983	HY	Pt. Loma SD	1986-296	11
15. 03–04 Oct 1983		Oxnard VEN	1986-076	11
16. 09–10 Oct 1984	HY	southern Samoa Peninsula HUM	1986-347	12
17. 27–30 Oct 1985		Stinson Beach MRN	1986-172	11
18. 03 Oct 1986		Little Sur R. mouth MTY	1986-475	12
19. 21 Sep–05 Oct 1987		Big Sycamore Canyon VEN	1987-287	13	ph.
20. 24 Sep 1988	HY	Goleta SBA	1988-276	13
21. 25–26 Sep 1988	HY	Tijuana R. valley SD	1988-189	13
22. 30 Sep 1988	AHY	Pt. Reyes MRN	1988-181	13	ph., Pyle & McCaskie (1992), Unitt (2004)
23. 01 Oct 1988	HY	Irvine ORA	1988-188	13
24. 02 Oct 1988	AHY	Harper Dry Lake SBE	1990-209	15	ph., SBCM 52625
25. 09–12 Oct 1988	HY	Pacific Grove MTY	1988-183	13	ph., AB 43:164, Roberson (2002:279, with incorrect year)
26. 21–23 Oct 1988	HY	La Jolla SD	1988-221	13
27. 25 Oct 1988	HY	Southeast Farallon I. SF	1988-285	13	ph.
28. 14 Oct 1989	HY	Morro Bay SLO	1990-016	15	ph.
29. 23–26 Sep 1990	HY	Golden Gate Park SF	1990-139	16
30. 07–17 Oct 1990		Pt. Loma SD	1990-155	16
31. 18 Oct 1990		Costa Mesa ORA	1991-040	17
32. 29 Sep 1991		Pt. Loma SD	1992-041	17
33. 11 Oct 1991	HY	Palomarin MRN	1993-119	17	ph., AB 46:146
34. 29 Sep 1992	HY	Southeast Farallon I. SF	1992-294	18	ph.
35. 14–21 Oct 1992		Carmel R. mouth MTY	1992-310	20
36. 16–22 Oct 1993	HY	Bolinas Lagoon MRN	1993-177	19	ph., one of two reported
37. 26 Oct 1993	HY	Southeast Farallon I. SF	1993-206	19
38. 28 Oct 1993	HY	Pt. Reyes MRN	1993-185	19
39. 02 Oct 1994	HY	Cosumnes R. Preserve SAC	1994-142	23
40. 16–17 Oct 1994	HY	Wilmington LA	1994-165	20	ph.
41. 17 Oct 1994	HY	Southeast Farallon I. SF	1994-193	20
42. 21–27 Sep 1995	HY	Galileo Hill KER	1995-091	21	ph.
43. 07–09 Oct 1995	HY	Wilmington LA	1995-099	21	ph.
44. 14 Oct 1995		Zuma Canyon LA	1996-053	22	ph.
45. 15–28 Oct 1995	HY	Lake Merced SF	1995-130	21
46. 17 Oct 1995	HY	Sunset Beach State Park SCZ	1995-096	21
47. 06 Sep 1996		Pt. Loma SD	1996-127	22
48. 16 Sep 1996	HY	San Diego SD	2000-014	25	ph., SDNHM 50241; V. f. flavoviridis?
49. 20 Sep 1996	HY	Huntington Beach ORA	1996-171	23
50. 20 Sep–17 Oct 1996	HY	Pt. Loma SD	1996-173	22
51. 22–28 Sep 1996	HY	Big Sur R. mouth MTY	1997-006	22	ph.
52. 28 Sep–14 Oct 1996	HY	Carmel R. mouth MTY	1996-172	22,29
53. 05 Oct 1996		Mission Ranch MTY	1997-051	22,29
54. 07–08 Oct 1996		Pt. Reyes MRN	1997-050	23
55. 20–22 Sep 1997	HY	Oxnard VEN	1998-067	23
56. 25–28 Sep 1997	HY	Pescadero SM	1997-139	23	ph.
57. 27–30 Sep 1997	HY	Oxnard VEN	1997-159	23
58. 01 Oct 1997	HY	Big Sur R. mouth MTY	2001-046	25
59. 14–18 Oct 1997	HY	southern Samoa Peninsula HUM	1997-149	23
60. 13–16 Sep 1998		Oxnard VEN	1998-139	24
61. 26 Sep–04 Oct 1998	HY	Oxnard VEN	1998-229	24
62. 28 Sep 1998	HY	Oso Flaco Lake SLO	1998-145	24
63. 29–30 Sep 1998	HY	Oxnard VEN	1998-154	24
64. 30 Sep–04 Oct 1998	HY	Ft. Funston SF	1998-151	24
65. 06 Oct 1998	HY	Galileo Hill KER	1998-219	24
66. 15 Oct 1998		Lighthouse Field State Beach SCZ	1998-220	24
67. 17 Oct 1998	HY	Pt. Loma SD	1998-165	24
68. 17 Sep 1999	HY	Pt. Loma SD	1999-167	25
69. 05 Oct 2000	HY	Montara SM	2000-124	26
70. 06 Oct 2000	HY	San Gregorio Creek SM	2001-042	26
71. 08 Oct 2000	HY	Oceano SLO	2001-050	26
72. 14–17 Oct 2000	HY	Carmel R. mouth MTY	2000-137	26
73. 20–25 Oct 2000	HY	Oxnard VEN	2000-145	26
74. 07–08 Oct 2001	HY	Goleta SBA	2001-169	27
75. 18 Sep 2002	HY	San Clemente I. LA	2002-171	28	ph., NAB 57:144, Sullivan & Kershner (2005)
76. 20 Sep 2003	HY	Pt. Loma SD	2003-120	29
77. 21 Sep 2003		Pt. Loma SD	2003-145	29
78. 09–10 Oct 2003		Westminster ORA	2003-166	29
79. 10 Oct 2003		Huntington Beach ORA	2003-177	29
80. 13 Oct 2003		Palos Verdes Peninsula LA	2003-174	29
81. 26–28 Oct 2003		Goleta SBA	2003-167	29	ph.
82. 28–30 Oct 2003		Galileo Hill KER	2003-153	29	ph.
Yellow-green Vireo – Not accepted, identification not established
04 Sep 1972		Finney Lake IMP	1972-070	1
02 Oct 1982		Gaviota SBA	1986-301	14
02 Sep 1985		Carmel R. mouth MTY	1986-028	11
29 Oct 1989		Batiquitos Lagoon SD	1989-201	15
29 Sep 1990		Upper Newport Bay ORA	1990-154	16
05 Oct 1991		La Jolla SD	1992-042	17
05 Oct 1996		Marin Headlands MRN	1997-049	24
28 Aug 1997		Goleta SBA	1998-035	23
28 Sep 1997		Pt. Loma SD	1997-145	23
04 Oct 1998		Moss Beach SM	1998-226	24
11 May 1999		Morongo Valley SBE	1999-120	26
17 Sep 1999		Santa Cruz I. SBA	1999-158	26
11 Oct 1999		Pt. Loma SD	1999-171	26
26 Sep 2002		Pt. Loma SD	2002-205	28
Yellow-green Vireo – Not submitted/reviewed
03 Oct 1967		Costa Mesa ORA		14	Garrett & Dunn (1981), Hamilton & Willick (1996)
01 Oct 1981		Pt. Loma SD	1989-029		record lost
11 Oct 1982		Goleta SBA			AB 37:225, see table entry 12
12 Oct 1988		Pt. Loma SD		14	AB 43:170
14–15 Oct 1993		Loleta HUM			Harris (2006)
17 Oct 1993		Bolinas Lagoon MRN			AB 48:150, see table entry 36
08 Oct 1997		San Elijo Lagoon SD			FN 52:127
28 Sep 1998		Pt. Reyes MRN			NAB 53:101
28 Sep 2000		Orick HUM			NAB 55:99, 481
07–08 Oct 2000		vic. Pt. Mugu VEN			NAB 55:104
11–12 Oct 2001		vic. Port Hueneme VEN			NAB 56:107
29 Sep 2002		Big Sur R. mouth MTY			NAB 57:114
13–14 Oct 2003		Long Beach LA			NAB 58:144

Figures

Figure 370. All of California’s records of the Yellow-green Vireo have occurred during September and October, with only a few before mid September.

Figure 371. Most of the 82 Yellow-green Vireos accepted through 2003 were recorded along the coast from Marin County southward. Humboldt County’s southern Samoa Peninsula accounts for the two more northerly coastal records, and Galileo Hill in Kern County accounts for half of the six interior records.

Yellow-green Vireo

YELLOW-GREEN VIREO Vireo flavoviridis (Cassin, 1851)

Accepted: 82 (85%)	Treated in Appendix H: no
Not accepted: 14	CBRC review: all records¹
Not submitted/reviewed: 13	Color image: none

Following a period of uncertainty regarding this taxon’s relationship to the Red-eyed Vireo—for example, Barlow (1980) and the AOU (1982, 1983) lumped them—Johnson and Zink (1985) seem to have put the issue to rest. This vireo breeds on both slopes of Middle America, from central Sonora and extreme southern Texas (scarce) south to Costa Rica and Panama, and winters in northern South America. Subspecies flavoviridis occupies most of the breeding range except for Sonora and Sinaloa, states that are populated by the less vivid V. f. hypoleucus. The species is casual or accidental on the Baja California Peninsula and in Nevada, Arizona, New Mexico, western and central Texas, Louisiana, Alabama (NAB 58:92), Florida, Bermuda, Barbados, and Venezuela. A 13 May 1883 specimen from Godbout, Quebec, has been widely reported in the literature, but the specimen is faded and damaged. Phillips (1991:205) reidentified the specimen as a Red-eyed Vireo × Philadelphia Vireo, but Holder (1996) noted that the specimen’s measurements fall within the lower range for a Yellow-green Vireo and suggested that DNA analysis may be needed to quell the controversy. An apparent Philadelphia Vireo × Red-eyed Vireo was banded and photographed on 20 September 2003 in southern Ontario (NAB 58:171).

The identity of a Yellow-green Vireo collected on 29 September 1887 along the Santa Ana River near Riverside, Riverside County, was verified by Ridgway (1904:146), who noted that the specimen tag gave the collection date as 29 September, not 1 October as originally published by Price (1888). The specimen’s whereabouts are unknown. Nearly a century passed before the next occurrence, but since the mid 1970s this vireo has been a very rare but regular autumn vagrant in the state. More than half of the records accepted through the end of 2003 (44 of 82) have been since 1994 (a mean rate of 4.4 per year during that 10-year period). All records fall between 6 September and 30 October, with a peak in early October (Figure 370), and all but a handful come from the central or southern coast (Figure 371).

The only California record suspected to possibly involve flavoviridis refers to a richly colored 16 September 1996 specimen from San Diego, San Diego County (Unitt 2004). Most records involve first-fall birds, aged primarily by their brown eyes (versus bright cherry-red in adults), but many individuals have not been aged conclusively. Only three records are known to involve adults: Pt. Loma, San Diego County, 15–19 October 1977; Pt. Reyes, Marin County, 30 September 1988; and Harper Dry Lake, San Bernardino County, 2 October 1988 (male, collected).

The field identification of Red-eyed and Yellow-green Vireos was treated by Terrill and Terrill (1981), Erickson and Terrill (1996), and Holder (1996).

¹Off the review list 1984–1985

[PURPLISH-BACKED JAY Cyanocorax beecheyi (Vigors, 1829) – see hypothetical section]