Search Results - "WHITWORTH, DARRELL L."

Population Trends for Scripps’s Murrelet Following Eradication of Black Rats by WHITWORTH, DARRELL L., CARTER, HARRY R.

“…Nest monitoring at Anacapa Island, California, USA, in 2001–2010 documented considerable benefits for Scripps’s murrelets (Synthliboramphus scrippsi) following…”
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Recovery of a threatened seabird after eradication of an introduced predator: Eight years of progress for Scripps’s murrelet at Anacapa Island, California by Whitworth, Darrell L., Carter, Harry R., Gress, Franklin

“…•Nest monitoring assessed the response of Scripps’s murrelets at Anacapa Island, California after black rats were eradicated in 2002.•Murrelet hatching success…”
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Long-Term Monitoring of Scripps's Murrelet and Guadalupe Murrelet at San Clemente Island, California: Evaluation of Baseline Data in 2012–2016 by Whitworth, Darrell L., Carter, Harry R., Parker, Michael W., Gress, Franklin, Booker, Melissa

“…San Clemente Island (SCI) supports one of the smallest Scripps's Murrelet (Synthliboramphus scrippsi; SCMU) colonies in the world, and perhaps the only colony…”
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Rangewide Population Genetic Structure of Xantus's Murrelet (Synthliboramphus hypoleucus) by Birt, Tim P, Carter, Harry R, Whitworth, Darrell L, McDonald, Anne, Newman, Scott H, Gress, Franklin, Palacios, Eduardo, Koepke, Josh S, Friesen, Vicki L

“…Population genetic structure was characterized in Xantus's Murrelet (Synthliboramphus hypoleucus) by analyzing variation in the mitochondrial control region…”
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Nocturnal Spotlight Surveys for Monitoring Scripps's Murrelets in At-Sea Congregations at Anacapa Island, California by Whitworth, Darrell L, Carter, Harry R

“…Concealed nest sites, mostly inaccessible breeding habitats, and nocturnal colony visitation have long hindered studies of Scripps's Murrelets…”
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At-sea congregation surveys to assess the status of Scripps's Murrelets Synthliboramphus scrippsi at islands off western Baja California, México in 2002-2008 by Whitworth, Darrell L, Carter, Harry R, Palacios, Eduardo, Gress, Franklin

“…In 2002−2008, we conducted spotlight surveys and at-sea captures to determine the distribution and to estimate the population size of Synthliboramphus…”
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Scripps's Murrelet at San Miguel Island, California: Status of a Small Population at the Northwest Limit of the Breeding Range by Whitworth, Darrell L., Carter, Harry R.

“…San Miguel Island (SMI) and its adjacent islets, Prince Island and Castle Rock, support a small population of Scripps's Murrelets (Synthliboramphus scrippsi)…”
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Breeding of Craveri's Murrelet Synthliboramphus craveri at four islands off west-central Baja California, México by Whitworth, Darrell L, Carter, Harry R, Palacios, Eduardo, Gress, Franklin

“…Breeding by Craveri's Murrelet (CRMU) has been documented on many islands in the Gulf of California, México, but has never been convincingly demonstrated on…”
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The rarest alcid: status and history of the Guadalupe Murrelet Synthliboramphus hypoleucus at Isla Guadalupe, Mexico (1892-2007) by Whitworth, Darrell L, Carter, Harry R, Palacios, Eduardo, Koepke, Josh S, Mciver, William R, Hamilton, Christine D, Mcchesney, Gerard J, Gress, Franklin

“…The Guadalupe Murrelet (GUMU) Synthliboramphus hypoleucus is the rarest alcid in the world (< 5 000 pairs), with regular breeding documented only at Islas…”
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BREEDING OF THE LEACH'S STORM-PETREL OCEANODROMA LEUCORHOA AT SANTA CATALINA ISLAND, CALIFORNIA by Carter, Harry R, Dvorak, Tyler M, Whitworth, Darrell L

“…Among the California Channel Islands (CCI) off southern California, the Ashy Storm-Petrel Oceanodroma homochroa(ASSP) is the most numerous and widespread…”
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Status of Ashy Storm-Petrel Breeding Colonies at Santa Cruz Island, California, 1912–1998 by Carter, Harry R., McIver, William R., McChesney, Gerard J., Whitworth, Darrell L., Gilardi, John R.

“…We summarized historical knowledge from 1912 to 1998 of 13 known breeding colonies of Ashy Storm-Petrels (Oceanodroma homochroa) at Santa Cruz Island,…”
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Nesting ecology of Marbled Murrelets at a remote mainland fjord in southeast Alaska by Barbaree, Blake A, Nelson, S. Kim, Dugger, Bruce D, Roby, Daniel D, Carter, Harry R, Whitworth, Darrell L, Newman, Scott H

“…Studying the ecology of endangered species in portions of their range where the population remains abundant can provide fundamental information for…”
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OCCURRENCE, MORPHOMETRICS AND PLUMAGE VARIABILITY AMONG LEACH'S STORM-PETRELS OCEANODROMA LEUCORHOA IN THE CALIFORNIA CHANNEL ISLANDS, 1976-2015 by Adams, Josh, Carter, Harry R, Mcchesney, Gerard J, Whitworth, Darrell L

“…We mist-netted and examined Leach's Storm-Petrels Oceanodroma leucorhoa (LESP) caught during 1991-2015 at three locations in the California Channel Islands…”
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Status, Distribution, and Conservation of Scripps's Murrelet at Santa Catalina Island, California by Whitworth, Darrell L, Carter, Harry R, Dvorak, Tyler M, Farley, Linda S, King, Julie L

“…The small population of Scripps's Murrelets (Synthliboramphus scrippsi) at Santa Catalina Island, California, has been restricted for at least several…”
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Polymorphic microsatellite loci for the threatened Xantus’s Murrelet (Synthliboramphus hypoleucus scrippsi) by Birt, Tim P., Sun, Zhengxin, Carter, Harry R., Whitworth, Darrell L., Newman, Scott H., Friesen, Vicki L.

“…Twelve polymorphic microsatellite loci were isolated and characterized for one subspecies of the Xantus’s murrelet ( Synthliboramphus hypoleucus scrippsi ), a…”
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FORAGING DISTANCES OF RADIO-MARKED MARBLED MURRELETS FROM INLAND AREAS IN SOUTHEAST ALASKA by Whitworth, Darrell L, Nelson, S. Kim, Newman, Scott H, Van Vliet, Gustaaf B, Smith, Winston P

“…We radiotagged seven female and two male Marbled Murrelets (Brachyramphus marmoratus) of undetermined breeding status and followed their movements through the…”
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Effects of radiotransmitters on the reproductive performance of Cassin’s auklets by Ackerman, Joshua T., Adams, Josh, Takekawa, John Y., Carter, Harry R., Whitworth, Darrell L., Newman, Scott H., Golightly, Richard T., Orthmeyer, Dennis L.

“…We examined whether radiotransmitters adversely affected the reproductive performance of Cassin’s auklets (Ptychoramphus aleuticus) breeding on the California…”
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A Night-Lighting Technique for At-Sea Capture of Xantus' Murrelets by Whitworth, Darrell L., Takekawa, John Y., Carter, Harry R., McIver, William R.

“…We captured 575 Xantus' Murrelets (Synthliboramphus hypoleucus) with spotlights and dip nets at 3 islands in the Southern California Channel Islands during…”
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Foraging Distances of Radio-Marked Marbled Murrelets from Inland Areas in Southeast Alaska by Whitworth, Darrell L., Nelson, S. Kim, Newman, Scott H., Van Vliet, Gustaaf B., Smith, Winston P.

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Reoccupation and Extension of Southern Breeding Limits of Tufted Puffins and Rhinoceros Auklets in California by McChesney, Gerard J., Carter, Harry R., Whitworth, Darrell L.

“…During seabird colony surveys in 1991 and 1994 at the southern California Channel Islands, we discovered Tufted Puffins (Fratercula cirrhata) and Rhinoceros…”
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