scholarly journals Spatial Organization of the Island Fox (Urocyon littoralis) on Santa Cruz Island, California

1996 ◽  
Vol 77 (3) ◽  
pp. 801 ◽  
Author(s):  
Kevin R. Crooks ◽  
Dirk van Vuren
Keyword(s):  
Spatial Organization ◽  
Santa Cruz Island ◽  
Santa Cruz ◽  
Island Fox ◽  
Urocyon Littoralis

scholarly journals An irruption interrupted: eradication of wild turkeys Meleagris gallopavo from Santa Cruz Island, California

Oryx ◽  
2014 ◽  
Vol 50 (1) ◽  
pp. 121-127 ◽  
Author(s):  
Scott A. Morrison ◽  
Anthony J. DeNicola ◽  
Kelvin Walker ◽  
David Dewey ◽  
Lyndal Laughrin ◽  
...  
Keyword(s):  
Native Species ◽  
Meleagris Gallopavo ◽  
Population Based ◽  
Santa Cruz Island ◽  
Santa Cruz ◽  
Island Fox ◽  
Incidental Predation ◽  
Urocyon Littoralis ◽  
Wild Turkeys ◽  
Near Extinction

AbstractEradication of introduced species is often necessary to conserve native biota on islands. Seven wild turkeys Meleagris gallopavo were introduced to Santa Cruz Island, California, in 1975 and the population began to irrupt in the early 2000s. Turkeys posed a variety of threats to native species, including that they could replace the previously eradicated population of feral pigs Sus scrofa as a prey subsidy for golden eagles Aquila chrysaetos, which through incidental predation had driven three subspecies of island fox Urocyon littoralis to near extinction. We implemented a four-phase programme to eradicate the turkey population, based on general principles for eradication efforts. For example, we focused on preventing individual turkeys from becoming aware of our methods, which increased the likelihood we would be able to detect and dispatch all of the birds. Leveraging the tendency of turkeys to aggregate during winter, we used baited drop nets, precision shooting, and monitoring of surgically sterilized, radio-telemetered ‘Judas turkeys’ to eliminate the population. We estimate the population comprised 310 individuals when the project began in 2006 and that the last bird died in December 2012. Methods used in this project could be applied to other alien bird eradication programmes, of which there are few examples in the scientific literature.

Demography and Status of the Island Fox and the Island Spotted Skunk on Santa Cruz Island, California

1994 ◽  
Vol 39 (3) ◽  
pp. 257 ◽  
Author(s):  
Kevin Crooks
Keyword(s):  
Santa Cruz Island ◽  
Santa Cruz ◽  
Island Fox

scholarly journals Hematology and Serum Chemistry of the Island Fox on Santa Cruz Island

2000 ◽  
Vol 36 (2) ◽  
pp. 397-404 ◽  
Author(s):  
Kevin R. Crooks ◽  
Cheryl A. Scott ◽  
Lizabeth Bowen ◽  
Dirk Van Vuren
Keyword(s):  
Serum Chemistry ◽  
Santa Cruz Island ◽  
Santa Cruz ◽  
Island Fox

Possible contemporary evolution in an endangered species, the Santa Cruz Island fox

2009 ◽  
Vol 12 (2) ◽  
pp. 120-127 ◽  
Author(s):  
H. M. Swarts ◽  
K. R. Crooks ◽  
N. Willits ◽  
R. Woodroffe
Keyword(s):  
Endangered Species ◽  
Contemporary Evolution ◽  
Santa Cruz Island ◽  
Santa Cruz ◽  
Island Fox

scholarly journals An Agent-Based Model of Santa Cruz Island Foxes (Urocyon littoralis santacruzae) which Exhibits an Allee Effect

2014 ◽  
Vol 1 (1) ◽  
pp. 97-109 ◽  
Author(s):  
Shelby M. Scott ◽  
Erin N. Bodine ◽  
Anne Yust
Keyword(s):  
Allee Effect ◽  
Agent Based Model ◽  
Santa Cruz Island ◽  
Santa Cruz ◽  
Agent Based ◽  
Urocyon Littoralis

scholarly journals Ectoparasites of the Island Fox on Santa Cruz Island

2001 ◽  
Vol 37 (1) ◽  
pp. 189-193 ◽  
Author(s):  
Kevin R. Crooks ◽  
Cheryl A. Scott ◽  
Lisa Angeloni ◽  
Lizabeth Bowen ◽  
Robert B. Kimsey ◽  
...  
Keyword(s):  
Santa Cruz Island ◽  
Santa Cruz ◽  
Island Fox

Notes from the Santa Cruz Island Reserve

2020 ◽  
pp. 45-86
Author(s):  
John Seibert Farnsworth
Keyword(s):  
United States ◽  
The United States ◽  
Endangered Plants ◽  
Canine Distemper ◽  
Santa Cruz Island ◽  
Santa Cruz ◽  
Island Fox ◽  
Field Notes ◽  
Land Bird ◽  
Endangered Status

This chapter presents the author's field notes from the Santa Cruz Island Reserve. The author was particularly interested in studying island foxes. Lacking natural predators, island foxes tend not to find humans intimidating, indeed appearing tame even though they are technically wild. The island fox is currently on the rebound from endangered status. There were two thousand foxes on Santa Cruz Island in 1994, but canine distemper and golden eagle predation reduced the numbers to under 135 by 2000. The author was also interested in the endangered plants, the red-tailed hawk, the anise swallowtail, and the island scrub-jays. Not only is the island scrub-jay endemic, occurring only on the island, but it is also the only insular land bird in either the United States or Canada. The explanation for this is that scrub-jays seem incapable of crossing significant amounts of water.

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