8031

• UCREFRP Catalog Number: 8031
• Author: U.S. Department of the Interior.
• Title: Fish and Wildlife Service Final Biological and Conference Opinion on Lower Colorado River Operations and Maintenance - Lake Mead to Southerly International Boundary.
• USFW Year: 1997.
• USFW - Doc Type: \
• Copyright Material: NO

Table 6. Rangewide population status for the southwestern willow flycatcher.
(based on composite of 1993-1995 survey data and 1996 survey data from lower Colorado River)!.

No. of
Sites
with
Territories

No of.
Drainages
with
Territories

No. of Sites (Drainages)

with s; 5
Territories

with 6-20
Territories

with >20
Territories

Total
No. of
Territories

New Mexico 19 8 16 (6) 2 (0) 1 (2) 173
Arizona 39 9 29 (4) 10 (4) 0 (2) 150
California 18 11 13 (8) 3 (1) 2 (3) 114
Colorado 6 5 6 (5) 0 (0) 0 (0) 13
Utah 2 1 2 (1) 0 (0) 0 (0) 2
Nevada 1 1 1 (1) 0 (0) 0 (0) 2
Texas ? ? ? ? ? ?

Total

85

35

67 (24)

15 (4)

3 (7)

454

Based on surveys conducted at >800 historic and new sites in NM (Maynard 1995, Cooper 1996, Skaggs 1996); AZ (Sogge and Tibbitts 1992, Sogge
et ai. 1993, Muiznieks et ai. 1994, Sogge and Tibbitts 1994, Sferra et ai. 1995, Sogge 1995a, Sogge et ai. 1995, Spencer et ai. 1996, 1997, McKernan
in litt.); CA (Camp Pendleton 1994, Whitfield 1994, Griffith and Griffith 1995, Holmgren and Collins 1995, Kus 1995, San Diego Natural History
Museum 1995, Whitfield and Strong 1995, Griffith and Griffith 1996 in lilt.); CO (T. Ireland 1994 in lilt., Stransky 1995); UT (McDonald et ai. 1995,
Sogge 1995b); NV (C. Tomlinson 1995 in lilt,). Systematic surveys have not been conducted in Texas. For sites surveyed multiple years, highest
single-year estimate of territories was used to tabulate status data. Tabulations do not include documented extirpations within survey period. Thus,
individual state estimates and rangewide totals may be biased upward.

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