Charadrius nivosus nivosus Habitat: Coastal beaches, shores of inland ponds/lakes Breeding Season Survey Window: Late May–Mid June Winter Season Survey Window: Dec 1–Jan 31 One survey pass with one surveyor for beaches <50 meters wide; two surveyors for beaches >50 meters wide
Elanus leucurus Habitat: Grassland, agricultural, wetland, riparian, woodlands, savannah Survey Window: Mar 1–Jun 15 Surveys follow California Coastal Commission protocol Five morning surveys spaced at least one week apart
Habitat: All habitats Survey Window: Feb–Aug Occurs if there is a potential for nesting birds Number and frequency of visits varies by project
Athene cunicularia hypugaea Habitat: Grasslands, open; elevation up to 5,300 feet Survey Window: Feb 15–Jul 15 • Four crepuscular (dawn and dusk) surveys, 500-foot buffer as legally able, 7- to 10-meter transects • Feb 15–Apr 15: One survey • Apr 16–Jul 15: Three surveys with 3-week interval between surveys •..Read More
Buteo swainsoni Habitat: Woodlands, grasslands, scrub, agricultural land Antelope Valley (Los Angeles and Kern counties) Conduct surveys within 5 miles radius At minimum, complete 2 survey periods before project initiation; complete Periods 2, 3, and 4 before environmental review Survey potential nesting trees within a 5-mile radius for presence of..Read More
Empidonax traillii extimus Habitat: Riparian; elevation below 8,500 feet Survey Window: May 1–Jul 31 • May: 1 diurnal survey; June: 2 diurnal surveys; July: 2 diurnal surveys • Five-day minimum interval between any survey • When surveying for both southwestern willow flycatcher and least Bell’s vireo, separate surveys must occur..Read More
Rallus obsoletus levipes Habitat: Salt marsh, coastal emergent wetlands Survey Window: Feb 15–Apr 30 • Six diurnal surveys, at least one at dusk and one at dawn • Minimum 7-day interval between surveys
Vireo bellii pusillus Habitat: Riparian; elevation below 4,000 feet Survey Window: Apr 10–Jul 31 • Eight diurnal surveys • Ten-day interval between surveys
Polioptila californica californica Habitat: Scrub; elevation up to 2,000 feet Breeding Survey Window: Mar 15-Jun 30 Non-Breeding Survey Window: Jul 1-March 14 • Within Natural Community Conservation Plan (NCCP) area: Three diurnal surveys with seven-day interval between surveys, year round • Outside NCCP area: Mar 15–Jun 30: Six diurnal surveys..Read More
Molothrus ater Habitat: Woodlands, grasslands Survey Window: Feb 15–Aug 30 • Trap throughout breeding season or as required by permit • Generally, maintain up to three males and two wing-clipped females in trap • Check traps daily to release non-target captures
