An Island Fox Den

courtesy of Will Campbell

Island foxes are different from their mainland ancestors the gray fox in many ways. One of those differences is that island foxes do not dig dens. Instead they seem to look for locations that are already somewhat protective. Right now, island foxes like Tani and Tiptu are searching for a den site that is just right. (Follow the adventures of Tani and Tiptu on Twitter, in the black box at the right, and on facebook).


They might chose a den location between rocks on a hillside, under dense shrubs or a combination of the two. Because island foxes are so small, usually between 3-6 lbs., even a space under a fallen tree can make a comfortable den.


When an island fox pair comes together between December and January, they are thinking about having a family. Island fox pups born in the spring will be blind and helpless. A successful den must offer warmth and protection for the pups first 6 weeks of life. (Tani was born almost a year ago.)


Young island fox pairs, like Tani and Tiptu, do not have the experience of their parents.  They will have to learn by trial and error which locations will provide a warm, dry den site with access to nearby food.

Channel Island Fox Heroes

courtesy National Park Service

 Many plants and animals across the country are facing challenges to their survival, but few endangered species have as many everyday heroes as the Channel Island fox.

Some heroes are the biologists and technicians that work in the field across the six Channel Islands. They count the island foxes in the wild, provide health checks and are the first line of defense protecting island foxes. Fox Biologists.

Some heroes are school children like Hannah H. and her third grade class from Montecito Union Elementary School. Hannah told her school mates about the endangered island fox and made a Fox Box to collect donations. The students from Montecito Union raised enough funds to provide a radio tracking collar for a wild island fox. Radio collars provide the second line of defense for this endangered species. (More About Radio Collars) The goal across the islands is to annually have 60-70 individual foxes on each island wearing radio collars.

Vaccinations for distemper and rabies are also vital to protecting endangered island foxes.  When Friends of the Island Fox gave presentations to the second- and third-grade students at Poinsettia Elementary School, student Shawn D. realized he could make a positive difference for this local animal. Shawn saved up his allowance to vaccinate an island fox. Vaccinations for island foxes.

2011 has been filled with heroes:

• Students at Canalino Elementary School developed their own plan to fund an island fox radio collar. Island Fox Ambassador School.
• Local restaurant Native Foods Cafe donated a percentage of a day’s sales.
• Three California zoos provided grant money (Fresno Chaffee Zoo) and education opportunities
• KLOS radio personality Cynthia Fox interviewed Friends of the Island Fox on the air and sponsored a radio collar

A huge thank you to all of our Channel Island Fox Heroes. This year you helped the endangered island fox move ever closer to recovery. (Current Population Update)

Island fox pairs are coming together across the islands. Follow Tani, the young female island fox, on twitter or facebook as she settles into her own territory and finds a mate.

Island Fox Population Update

courtesy of Anita Machlis

Every year biologists count island foxes across the California Channel Islands in the late summer and early fall. Island foxes are captured in safe traps so they can be given health checks, fitted with radio collars and given vaccinations. When the biologist from the six different islands meet for the annual Island Fox Conference in June, they share their official population numbers and discuss the successes and challenges from each island.


The official population estimates from 2010 are:

• San Miguel Island - 516
• Santa Rosa Island - 292
• Santa Cruz Island - 1302
• Santa Catalina Island - 1008
• San Nicolas Island - ~500
• San Clemente Island - 1127

graph generated by Friends of the Island Fox 2011

The numbers show that island fox recovery has been very robust on San Miguel, Santa Cruz and Santa Catalina Islands. The island foxes on Santa Rosa Island are recovering, but at a much slower rate. Each island fox population has its own challenges. For the current status of island foxes by island Download - Island Fox Update 2011 pdf

Stay tuned for updates on 2011 population numbers as they come in from the autumn field counts. 

A Radio Collar for Tani, the Island Fox!

photo courtesy of Kevin Schafer

Across the Channel Islands young island foxes are striking out on their own. They have spent the summer playing with their siblings and growing up. Their parents have taught them to hunt and find native fruit. Island fox food. Now, it is time for them to search out their own territory.

Tani, the young island fox that we have been following on Twitter, has left her parents and faced some challenges. Tani. A few days ago she tangled with another adult island fox female and was injured. Island foxes depend on the resources in their territory and they will protect their territory from other island foxes. Tani was lucky to only be injured on her ear, but the infection she suffered left her weak and vulnerable. Fortunately, on the Channel Islands biologists in the field are able to provide some medical care to wild island foxes. (Channel Islands National Park, Santa Catalina Island and the U.S. Navy islands)

When Tani received medical treatment she also was fitted with a radio collar to track her movements. The radio collar will provide information on how far she travels from her parents home range and enable biologists to understand where a young fox establishes its own territory. 

Across the islands young island foxes face challenges surviving without their parents. In the past two months several young island foxes have been hit by cars on Santa Catalina Island. Territory along roads can be attractive, but inexperienced youngsters don't know how to avoid cars. Support Watch for Foxes Signs.


This autumn Friends of the Island Fox funded our 72nd radio collar to track island foxes on the Channel Islands. Radio collars provide information on island fox movements and also alert biologists when an island fox has died. If the animal stops moving for a 6-8 hours, the collar gives off a special mortality signal. With the aid of the radio collar, biologists can locate the island fox's body and determine if the animals death marks a potential threat to other island foxes. Response to introduced disease and unexpected predation by golden eagles can happen rapidly when biologists have specific information from animals in the field. Radio collars on island foxes have helped the endangered populations on San Miguel, Santa Rosa, Santa Cruz and Santa Catalina Islands to make unprecedented recoveries.

photo courtesy of Kevin Pease

Tani is wearing her new radio collar and hopefully it will help biologists track her recovery and her activities as she becomes an adult island fox and establishes her own territory.

Follow Tani on Facebook and on Twitter.

Island Foxes Say Thank You

Across the Channel Islands endangered island foxes are successfully making a come back from the brink of extinction. You and your friends and neighbors are helping to make a positive difference. Friends of the Island Fox extends our thanks to the following special friends that have made extra efforts on behalf of endangered island foxes.


This summer Native Foods Cafe raised funds for the island fox during a day of business. Their event raised $500 for island fox conservation.


In May, Island Fox Program Director Pat Meyer and Keri Dearborn, Education Director, were interviewed on Cynthia Fox's Sunday morning show "Spotlight on the Community" on KLOS Radio. Listen to the Interview. Cynthia Fox continued her support by sponsoring a fox radio-tracking collar.


This summer private donors supported another radio-tracking collar to bring our total number of collars funded to 72!


Because of your support and concern this local endangered species is recovering. Your involvement on behalf of the island fox is allowing images like the one below to be natural once again. Watch as an island fox ventures into a bald eagle nest at night looking for tidbits of food that the bald eagle chick has dropped. This is a brave little island fox, notice the bald eagle chick (bigger than the island fox) sleeping in the lower right corner. 



Island foxes across the Channel Islands thank all of you who care and are taking action to support health checks and vaccinations, radio collars and education to make a positive difference on their behalf.

Science and the Island Fox

Get ready to explore, discover and be a scientist. On Oct. 1, 2011 Friends of the Island Fox will join our friends the Santa Barbara Zoo in a day of science fun.

Science Day at the Santa Barbara Zoo

Saturday Oct. 1, 2011

10 AM - 3PM

Included in the price of admission, there will be family friendly activities that focus on science learning. Teachers are encouraged to come and discover activities that meet California state science standards and can be replicated in the classroom. Admission for teachers and their families is FREE with preregistration. Visit the Santa Barbara Zoo website for more information.


Friends of the Island will be exploring the Channel Island fox’s great sense of smell. Why does an island fox nose work better than a human nose? Could you find your way home using only your nose?


Tani, the juvenile island fox, has a brother called Acorn that went exploring. He had to find his way back to the family den using his sense of smell. Follow the adventures of island fox pups born this spring on Facebook and twitter.

Zoos Helping Island Foxes

wild island fox wearing radio collar funded by Fresno Chaffee Zoo

Zoos of the 21st century are active partners in conservation. Friends of the Island Fox salutes our Zoo friends.

The Fresno Chaffee Zoo has awarded a conservation grant to Friends of the Island Fox for 5 years in a row. They have sponsored 20 radio collars to monitor island foxes in the wild! These radio collars are vital to maintaining a healthy wild population and demonstrate the role modern zoos play in supporting conservation efforts to preserve and restore healthy wild ecosystems. Thank you to the keepers and staff of Fresno Chaffee Zoo for being true island fox friends. Visit the Fresno Chaffee Zoo.

The Santa Barbara Zoo is home to four island foxes, three San Clemente island foxes born in captivity and a Santa Rosa island fox with a chronic health condition. The keepers and staff of the Santa Barbara Zoo wrote the book on keeping captive island foxes healthy and on successfully breeding them. When island foxes became endangered in the wild (the crisis years - northern islands, Catalina Island), the knowledge gathered at the Santa Barbara Zoo helped to establish successful captive breeding programs on four islands. Zoo veterinarians have also provided vital healthcare to wild island foxes. The Santa Barbara Zoo is home to Finnigan, the education island fox, helping to bring the story of this endangered species to thousands of local people every year. Thank you to the keepers and staff of the Santa Barbara Zoo for being true island fox friends. Visit the Santa Barbara Zoo.

Size of golden eagle presented at AZAD Conference

The docents of the Los Angeles Zoo and Botanical Gardens have made educating the local community about the endangered island fox a priority mission. This September they carried their education outreach back to Memphis, Tennessee to the national conference of the Association of Zoo and Aquarium Docents. The success of island fox recovery depends on active partnership between scientists, conservation organizations, government agencies and an educated local community. The Friends of the Island Fox grew out of the docent program at the Los Angeles Zoo and these dedicated volunteers continue to be some of our greatest supporters. (Annual Earth Day event) Thank you to the docents of the Los Angeles Zoo and Botanical Gardens for being true island fox friends. Visit the Los Angeles Zoo.    Become a docent.