Featured Scientist

Tim working a deer capture in Round Valley. The deer was captured with a net gun, blindfolded, and hobbled for helicopter transport to base camp or a central processing station.


Tim radio-collared and took samples from this anesthetized black bear during the 2016 Eastern Sierra Black Bear Study.

Tim Taylor is an environmental scientist for CDFW’s Inland Desert Region, which includes Imperial, Inyo, Mono, Riverside and San Bernardino counties. He has spent his entire 17-year CDFW career in a single area of study – the Eastern Sierra – and he is only the third Mono County unit biologist in department history.

Like many other CDFW scientists, Tim earned his Bachelor of Science in wildlife management at Humboldt State. The Southern California native did myriad odd jobs to get through college, including working on a ski lift, putting up drywall and even thinning trees and fighting fires. After college, he worked as an independent biologist throughout California, Oregon and Nevada, conducting wildlife assessment surveys for a wide range of threatened and endangered species including desert tortoise, red-legged frog, spotted owl and Sierra Nevada red fox.

Today, Tim’s primary job duties include monitoring diverse wildlife species – including sage grouse, deer, pronghorn and bears – in a part of the state most Californians never have the opportunity to experience.

Who or what inspired you to pursue a career in wildlife biology?

When I was a kid growing up in the June Lake area of the eastern Sierra, I always knew I wanted to be a wildlife biologist. I had the good fortune of getting to know the very first CDFW wildlife biologist for the Mono unit, Andy Anderson, and he took me into the field with him whenever possible. I got to participate in some amazing wildlife work, like trapping and relocating nuisance black bears (when we used to do that!), rearing Canada goose goslings, counting strutting sage-grouse and helping at deer hunter check stations. This work provided me with an early appreciation and knowledge of eastern Sierra wildlife and their habitats, and from that time on, the Mono unit biologist position became my dream job.

After Andy retired, I became good friends with his successor, Ron Thomas. He was also a great mentor. I started working for CDFW in the Sierra Nevada bighorn sheep program with the hope of eventually transferring to the Mono unit position. Fortunately, after Ron retired, I was in the right place at the right time.

What are your current responsibilities?

Working as a unit wildlife biologist requires being a generalist with the knowledge and understanding of all wildlife that inhabit my work area. During any given day I can deal with a number of different wildlife species issues like sage-grouse habitat conservation, mule deer and pronghorn research, nuisance black bear complaints and talking with deer hunters about the best place to find a buck. My duties include wildlife resource assessment, habitat enhancement planning and implementation, hunting management, nuisance wildlife response and environmental review. I am currently involved with a number of different wildlife research projects, including a sage-grouse translocation effort to rescue a small, isolated sub-population near the Mono basin and a GPS collaring study of black bears to determine home range distribution and habitat use.

I also occasionally provide advice on how to reduce human-bear conflicts at the Mountain Warfare Training Center, a US Marine Corps installation in Mono County. I review environmental documents that relate to their training area, and work with new recruits on how to identify animals, as part of their survival training.

Which species do you work with most frequently?

Mule deer are the most conspicuous and widespread large mammal in the eastern Sierra. Mono county supports five large migratory herds. I manage 2 mule deer hunt zones, X12 and X9a. Hunt zone X12 comprises three herds that occupy northern Mono County. These are interstate herds that are jointly managed for hunting purposes by CDFW and the Nevada Department of Wildlife. Zone X9a comprises two herds that occupy southern and central Mono County. Those are managed solely by CDFW. Along with other CDFW biologists, I conduct population surveys and collect data on vital rates and nutritional condition as part of an integrated population monitoring approach for assessing the status of local deer herds.

Mono County also supports a large population of greater sage-grouse, which is part of the Bi-state Distinct Population Segment (DPS) of greater sage-grouse. The Bi-state DPS, which is genetically distinct from other sage-grouse across the range, occupies sagebrush habitat in Inyo and Mono counties in California and Douglas, Mineral, Lyon and Esmeralda counties in Nevada. Sage-grouse is a sagebrush obligate species, meaning it relies on sagebrush for its survival. They are also an umbrella species, used in making conservation related decisions that affect the sagebrush ecosystem. Our efforts to conserve the sage-grouse indirectly protects other sagebrush obligate species, such as pygmy rabbit and Brewer’s sparrow, that inhabit the sagebrush ecosystem.

Then there’s the eastern Sierra black bear. Their population has increased dramatically over the last 10 years, and therefore has created numerous management challenges. In most of the rural east side towns there is no regular garbage pickup, so people store their trash and take it to a landfill. This creates a situation where bears have open access to garbage that is not properly secured in a building or bear-proof container. Once a bear has become food-conditioned, it’s pretty much over. It will start breaking into homes and cabins next.

What project or accomplishment are you most proud of?

In 2007, CDFW acquired 1,160 acres of critical greater sage-grouse habitat in northern Mono County, which included two strutting grounds, brood rearing meadows and winter habitat. Approximately 900 of the 1,160 acres was proposed to be subdivided into 40 acre parcels, which included the only two remaining leks for this sub-population of sage-grouse, as well as some critical mule deer migration and summer range habitat. CDFW acted in a timely manner in acquiring the property, and in doing so, prevented the loss of this critical sage-grouse habitat.

Without the acquisition and eventual conversion of the property into a State Wildlife Area, these leks would have been destroyed resulting in the extirpation of this sage-grouse sub-population.

The acquisition was funded by the Wildlife Conservation Board, and was especially important because it was one of the many conservation actions that helped to prevent the federal listing of the Bi-state greater sage-grouse.

What project would you most like to do, given unlimited time or resources?

I would implement several much needed wildlife crossing projects that would include a combination of underpasses, overpasses and fencing to allow deer, bears and other wildlife safe passage across highway 395 in Mono County.

What do you love most about your job?

The fact that I have the flexibility to work with so many different wildlife species on so many different projects.

What advice would you have for a young scientist wanting to do what you do?

Try to become as diversified as possible with respect to your knowledge of wildlife throughout the state. Working as a unit biologist requires multiple species management so become a naturalist and develop a broad understanding of the species that inhabit your work area.

Photos courtesy of Tim Taylor
Top photo: Tim working on a Round Valley deer herd capture team

Sara Holm is an environmental scientist with the Wildlife Management Program in CDFW’s North Central Region. Based in Colfax, she is the unit wildlife biologist for Placer and Nevada counties. Her work includes a multi-agency wildlife-crossing project, collared mule deer studies, coordinating the region’s upland game bird hunts, land acquisition and management and many resource assessment projects and surveys. She works primarily with deer, bear, dove, pheasant and turkey but dabbles with lions, elk and bighorn sheep. Critical aspects of her work include responding to wildlife conflicts and providing technical expertise to hunters and the public.

Sara earned a Bachelor of Science degree in Wildlife Management from Humboldt State University in 1999 and started her career two days later as a scientific aide with CDFW. She has worked in the North Central Region for 17 years. She also recently became a hunter education instructor.

What led you into a career as a wildlife biologist?

I credit my family for introducing me to wildlife. The first vacations I can remember were camping, fishing and visiting national parks like Yosemite, Glacier and Yellowstone. There is nothing as exciting as a bear jam (a traffic jam caused by tourists stopping their cars on the side of the road to view bears) in Yellowstone, or that quick flash of a trout taking your fly.

When I was young, I knew I wanted to work outside but all I could envision was being a park ranger. I took a forestry class in junior college but realized that was not quite right for me. My biology professor told me about Humboldt State University and CDFW, so I volunteered with CDFW’s Wildlife Investigations Lab. That is when I realized I could be a wildlife biologist and that I wanted to work for CDFW. It was all fascinating work, whether I was pulling a bear tooth at the front counter, feeding a lion in the pens or responding to a deer stuck in a fence.

I am inspired by the resources and by the chance to make a difference with science. It always made me proud to know I worked for the wildlife as well as the hunters (and anglers). When I complete a great project that I know will help wildlife, or validate a deer tag and talk to another happy outdoor enthusiast, I know that I am in the right place.

What is a typical day like for you at work?

One of the things I like best about my job is that it is never typical! On an office day I may start out answering nuisance wildlife calls, doing paperwork, checking on our collared deer locations or catching up on data entry -- but I could get a call that takes me into the field, to help an injured animal or check damage caused by a bear or lion. When I know I will be in the field the day usually starts early and could take me anywhere in my unit, or throughout the region to help on a colleague’s project.

The work can be hard if you are putting in 14-hour days trying to collar deer and you do not see a single animal, or you come out of the field to 20 messages on your phone, but I would do most of it for free because it is so fun. I have collared tons of deer, put bear cubs out in dens, flown many helicopter surveys, captured bighorn sheep and had many great adventures, but all of the work I do is made better by my fellow biologists. They are a second family to me and we have fun together, whether we are at a meeting or around the campfire. I think everyone should love their job but I am lucky to love the people I work with.

What is your favorite species to interact with or study?

I have a hard time choosing and I am always looking to work with something new. I love seeing fuzzy quail babies in the summer and flushing blue grouse out in the woods but I am more of a mammal person. I mostly work with mule deer and they are more fascinating than they look. Ground darting is anything but routine, as each captured animal is different. It is so exciting to get collar data back and see how and where they moved.

What aspect of working in the Sierra Nevada foothills is unique?

The foothills are interesting, especially considering my unit covers the foothills all the way over the crest of the Sierra to the Tahoe Basin (the elephant in this room is actually a bear!). The most complex part of this area is that there are many people living in urban environments that are actually in rural settings. Communities and pets, including livestock, actually create habitat in areas that are not ideal for wildlife. A pond in the middle of a small town attracts too many geese or maybe invites beavers that then flood roads. Rose bushes attract deer, which draw in lions. People want to raise chickens and then bears walk past homes and across busy roads to eat them. Sometimes I evaluate human-wildlife conflict in a busy city like Auburn, and other times I have to drive an hour out a dirt road for a similar issue.

What is the most rewarding project that you’ve worked on for CDFW?

I am the most proud of my work with the Highway 89 Stewardship Team. Our inter-agency team has built three wildlife crossings with fencing and wildlife jump-outs (which allow animals an exit point if they are within a fence) that are allowing animals to get across the road safely, connecting their habitat and making it safer for drivers. We have mentored other teams and run a successful program for students to teach others about the problems roads cause and the available solutions. These crossings will be in place long after I am gone, so it is a legacy that I can leave on the landscape.

If you had free reign and unlimited funding, what scientific project would you most like to do?

I believe we are currently doing projects that are good science and important for our agency but we could always do them better. I completed a project to evaluate the feasibility of reintroducing desert bighorn sheep to the North Central Region. With enough time, money, and legwork we may be able to clear out the livestock and make it happen. I would love to release some collared animals back in the Truckee River Canyon, spend my days monitoring them and witness their successful return to the area.

Is there a preconception about scientists you would like to dispel?

I guess I would dispel any lasting notions that science is only for men. I work with several other “lady bios” and I am proud of how we operate and the skills that we have. Sometimes when you are talking to the public, they will misconceive what you know or can do just because you are a female. After providing technical assistance I’ve been asked how long I’ve done this job as if to validate my credibility, or I’ve had questions automatically directed at male counterparts even though it’s my area and I’m the one who can answer the question.

Any advice for people considering careers in science or natural resources?

Be persistent and open to opportunity where it is available. We tend not to leave our jobs, so you may have to put in time and wait for something permanent to open up, but you can find a natural resource job in unexpected places like airports or land trusts. Volunteering and meeting people are how I got in. I would advise people to work hard for what they want because this is the best job!

Hailey Marie Harrell is an Office of Spill Prevention and Response (OSPR) environmental scientist working as part of the Northern Field Response Team. She graduated from the University of California, Davis, in 2013, with a double major in Plant Biology and English.

Hailey was initially hired as a scientific aid for CDFW’s Habitat Conservation Planning Branch’s Native Plant Program. There, she had the opportunity to do field work with skilled botanists on some of California’s most sensitive plants, conduct census surveys and issue California Endangered Species Act scientific collection permits. She promoted to a permanent role with OSPR in 2016, and has been immersed in the world of oil spill prevention and response ever since.

A relative newcomer to CDFW in terms of job tenure, Hailey has a very fresh perspective on working as an OSPR environmental scientist.

Who or what inspired your love of natural resources?

I’ve spent countless hours in the woods and along waters of this state and I have observed many wonderful and fascinating things within them. I was raised by avid hunters and fishermen who instilled in me an admiration of our truly beautiful natural resources. They hammered home the importance of conservation and taught me to take care to leave places as good as, if not better, than I found them.

How did you come to work for CDFW?

I chose to study plants instead of animals when I got to college because they were a form of life I knew very little about. I was encouraged by a few professors who liked my writing style to take English courses while in college because it is rare to find someone who loves science and also enjoys writing. They saw me as a bridge between technical information and the layperson.

After college, I took a job as a technical writer for a privately contracted aerospace and defense company. After several months, I had learned all the ins and outs of the position and no longer felt challenged. I spent every minute of every 40-hour workweek sitting at a desk in front of a computer screen. In the small bits of time I could manage, I took every opportunity to network with people that were already working in various natural resource agencies. Through these interactions, I got to know some great employees of CDFW who gave me advice and let me do some volunteer work to gain experience for my resume. I eventually landed a scientific aid position with CDFW’s Native Plant Program where I learned my way around the intricacies of state service as I assisted in surveying some of California’s amazing threatened and endangered plant species and issued permits for their protection.

Why did you change your focus from native plants to oil spill response?

I didn’t know if I could love a job as much as the one I had with the Native Plant Program, but knew I couldn’t stay a scientific aid forever so I applied for environmental scientist positions. The OSPR position I have now was the only one of many applications I submitted that gave me a call back. I went into my interview knowing nothing about OSPR except what I had scrambled to learn about it before the interview. I was ecstatic, but at the time had no idea how truly lucky I would be to be offered this position.

Was there a tough learning curve?

The learning curve when joining OSPR was very steep, initially. I think the most challenging aspect was figuring out all the acronyms that are used. In working with the Native Plant Program I scrambled to learn the intricacies of working for a government agency, but the language itself was straightforward because I was exposed to plant terminology throughout college. OSPR was a whole different ball game. For example, it took some time just for me to realize that they were saying “T and E” species (referring to threatened and endangered wildlife) instead of “teeny” species. I would hear the question, “Were any teeny species impacted by the spill?” and would quietly wonder why they were only concerned with little organisms.

In your new position at OSPR, what are your typical duties?

As a first responder to petroleum spills, I work with a wide variety of our state’s natural resources and travel to many beautiful places across California. I get to work closely with our game wardens, the U.S. Coast Guard, private industry and other local, state and federal government agencies. At some spills, I will be the first person on scene and will have to convey my initial findings to my team to determine what level of response we will need to resolve the issue. Sometimes I will be on my own to resolve the issue, sometimes there will be a small group of us working together and sometimes there will be a large contingency of federal, state and local agencies involved to help resolve the incident. Each incident has a unique set of obstacles that need to be overcome. I fill whatever role is necessary to help get the job done as quickly as possible.

This job is also full of surprises. Few days are the same as a first responder to petroleum spills. One minute you think you’ll be in the office all day and the next minute you’re in the car driving to the coast to walk the shorelines and look for oil, or responding to a sunken vessel, or getting to the scene of a truck crash, etc. Weird reports sometimes come in that challenge your knowledge and your strategies for managing problems. It is hard to get bored, and that is one of the many things I love about it.

What has been the most exciting or enjoyable aspect of working at OSPR for you so far?

I think that the most exciting part of the job has to be emergency response. When you go on call you never really know what kind of spills you are going to get. When you get a report of a spill that warrants a response you generally know where you need to go, but there’s almost always some ambiguity regarding what you are going to find. I love working in a position where there’s so much variety.

The networking, training and interagency collaboration are equally enjoyable aspects of the job. For example, one of my first oil spill drills played out a scenario at an oil refinery in San Pablo Bay. It was a large drill with key representatives from the refinery, government agencies, county hazmat, etc. No more than a month later, there was a response to that very same refinery and almost all of those key players I met at the drill were in the command post during a real event. It felt like déjà vu being there and seeing everyone again. It helped put into perspective just how important it is to practice with drills and meet the key players that will be involved during real spills. It builds trust and understanding between those parties involved and helps to demonstrate that we are all working towards a common goal.

You’re still early in your career. Where do you think you will be, professionally speaking, in five years, or 20 years?

I can really see myself sticking with OSPR for the long hall through to retirement. From discussions with friends and family, this really is a unique and amazing position I am in that is unlike any they have heard of before. I need variety to keep myself content and OSPR certainly has that.

Any advice for people considering careers in science or natural resources?

Having a job where I could contribute to prolonging our natural resources and get out in the outdoors to enjoy them as much as possible has been a dream I did not know I would achieve, but that was my goal and I fought for it. You may have to scrape by and do things that you don’t want to for a while (maybe even a long while), but if you have enthusiasm, determination and a true love of conserving our natural resources, keep working towards your goals. Talk to people, volunteer your time and keep climbing the ladder. Eventually, if you remain persistent, you will find yourself somewhere you never thought you’d be, with a job that you can’t imagine being without.