Staff and Board of Directors

Julie Duke- Executive Director

Julie Duke 2014Julie’s association with Wolf Hollow started back in 1997/98 when she was an animal care volunteer at the center while she was completing her Associates Degree at Skagit Valley College, Friday Harbor.  She continued as a wildlife transport volunteer on Orcas and later served on our Board of Directors. After moving away from the islands in 2004, she received her Bachelor’s Degree in Psychology from Washington State University, then focused on non-profit business management and fundraising in Mendocino, CA and then on Bainbridge Island. 

She is very excited to come back to Wolf Hollow as Executive Director,
bringing with her the years of non-profit experience she developed while
she was away.   She is looking forward to becoming a part of the SJI
community, working with Wolf Hollow’s wonderful supporters (and
feeding baby birds if the rehabilitation staff will let her!). 

In her spare time Julie sings with her blues band, The Julie Duke Band, and enjoys cooking, photography and long walks on the beach with her pugs.

Lynne Mercer – Administrative Coordinator

Lynne Mercer moved to San Juan Island in 1974. She has appreciated the close presence of wildlife in her life in the islands and celebrated the opening of Wolf Hollow as a resource in caring for the wild creatures she loves. Lynne spent many years in real estate on San Juan and built several homes. She is pleased to offer her business administration skills to keep the books for Wolf Hollow.

Penny Harner – Wildlife Rehabilitator


Penny has had animal experience as an intern in a marine mammal park and at a wildlife rehabilitation center in Texas before she was hired as Staff Rehabilitator at Wolf Hollow in 2007. She has a degree in zoology with emphasis in marine biology from University of Washington. She had spent a spring quarter at the University of Washington Laboratories here on the island. She always knew that she would be coming back to this place that she had come to love from her studies. Penny also brings five years of customer service and team management to Wolf Hollow. She enjoys giving a helping hand and assisting others in any way. As Staff Rehabber Penny’s work involves animal care, and training and supervising interns and animal care volunteers.

Vicki Taylor – Wildlife Rehabilitator

Vicki moved from Boise, Idaho to join our staff in spring 2013. She graduated from the University of Idaho in 2008 with a degree in Wildlife Resources and Conservation Biology. Her experience in animal care includes work at a bird rehabilitation center in Idaho, at an exotic animal sanctuary in Nevada and at The Wildlife Center of Virginia.  As Wildlife  Rehabilitator, Vicki will be involved in all aspects of animal care, and in training and supervising rehab staff, interns and volunteers.

Shona Aitken – Education Coordinator

Shona was born and raised in Scotland where she earned a degree in Biology and Environmental Science from the University of Stirling, before working for the Royal Society for the Protection of Birds and as a Countryside Ranger for several years. She spent two years working at a Marine Station in Sweden before moving to San Juan Island in 1990.  Shona started volunteering at Wolf Hollow later that year and soon became a member of the rehab and education staff.

As our Education Coordinator, Shona’s aim is to help people learn more about local wildlife and human impacts on these animals and their habitats. She coordinates our Educational Outreach Program, produces our newsletter, “Wild Times”, works with our education birds and coordinates the Internship Program.

Mark Billington – Facilities Manager

mark billington

Mark joined us at Wolf Hollow in May 2008 after working as Hatchery Manager at Westcott Bay Sea Farms here on San Juan Island for many years. Mark’s work at Wolf Hollow involves repairing and maintaining all of our enclosures, buildings and equipment and coordinating construction of additions to our facilities.

Marc Brown – Volunteer Coordinator


Marc moved to San Juan Island in 2010 from Washington, DC.  He earned degrees in Biology and Environmental Studies from the University of California, Santa Cruz and during his studies conducted wildlife and marine research in The Gulf of California, Mexico; Mendocino, CA; and eastern Mojave Desert.  Following college, Marc volunteered as a Peace Corps Aquaculture Extensionist in West Africa.  A career twist resulted in a 32+ year career with the IRS in various locations across the US; retiring in 2014.   However, having never lost interest in marine science and wildlife he is pleased to have the opportunity to work with Wolf Hollow Wildlife where he can merge his extensive business experience with marine sciences and wildlife interests.