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Second Saturday Presentations

Live and Online via ZOOM.  All Second Saturday presentations and videos are FREE and open to the public; powered by Donations and Volunteers. 

The Friends of Hagerman Present:

Fish Ecology in Lake Texoma

Watch Video  Presented Saturday, September 11, 2021

Have you ever wondered what fish call Lake Texoma home and why? Well, Tim Patton will be discussing several broad components that are necessary to understand a “bigger picture” of the factors that affect the ecology of a reservoir and the fishes that live there. He will cover watershed concepts, some basic limnology (the study of the biological, chemical, and physical features of lakes), and how these factors affect fish and fish interactions.

Tim Patton has been a professor of Fisheries and Wildlife Science at Southeastern Oklahoma State University since 1998 and served as an adjunct faculty at the University of Oklahoma Biological Station. He received a B.S. in Fisheries and Wildlife Management from Arkansas Tech University, followed by an M.S. and a Ph.D. in Zoology and Physiology from the University of Wyoming. His research and teaching interests have been primarily in aquatic ecology, especially as it applies to the conservation of fish, amphibians, and reptiles.

Second Saturday Videos

Hummingbirds with Bert Garcia

Watch Video Presented August 14th, 2021 

Hummingbirds are fascinating creatures that you can observe in your backyard. Bert Garcia will share information about this marvel of nature. Hummingbirds are the smallest bird in the world, but they can perform amazing feats and have super qualities. Bert reveals where to find Hummingbirds and which ones are commonly seen in North Texas. He also provides best practices for attracting Hummingbirds to your backyard.

Since 2006, Bert Garcia has been an active volunteer at Hagerman NWR. He is currently a member of the Friends of Hagerman NWR Board of Directors and chairs the Wildlife Explorer Tram committee. Bert’s support includes policy committee chair, former chair of the Bluebird nest box committee, and presenter for the speaker’s bureau. He enjoys physical fitness, fishing, golf and is an avid photographer and a Texas Master Naturalist.

H. S. “Bert” Garcia, a native Texan, has been a licensed attorney in the State of Texas for 44 years and was a federal prosecutor for 24 of those years. He supervised the Sherman and Plano offices of the United States Attorney’s Office for the Eastern District of Texas for 19 years, was appointed United States Attorney for Puerto Rico by President G.W. Bush on June 3, 2002, and served in that capacity for 4 years before returning to Texas. Before law school, Bert served in the United States Marine Corps for almost 5 years, attained the rank of Captain, and earned his military wings. He flew A4 Skyhawk jets for the Marine Corps.

"Crazy Trio" Photo by Bert Garcia

Dragonflies With Rick Cantu

Watch Video Presented July 10, 2021 

Many species of dragonflies and damselflies occur at Hagerman National Wildlife Refuge.  In this program, Rick will discuss the species most likely to be found at the refuge, when the species are most likely to be encountered, and where he has seen the species on the refuge.

Rick grew up in Rockport, Texas.  He has a Bachelors of Science in Range and Wildlife Management from Texas A&M University in Kingsville, Texas.  Rick has worked for the U.S. Fish & Wildlife Service for almost 30 years, at refuges in South Dakota, Kansas, Missouri, Texas and Oklahoma.  He spent over a decade as the assistant manager at Hagerman and has been the refuge manager at Tishomingo National Wildlife Refuge since 2016.

Photo by Rick Cantu

The Tale of Two Titmicewith Jennifer Vaughn

Watch Video  Presented June 12th at 10:00AM

Two species of Titmice, Tufted Titmouse and Black-crested Titmouse, reside across much of Texas and have been suspected of interbreeding for nearly a century. In this talk Jennifer will discuss the historical and current understanding of their species status, her recent research related to their genetics, behavior, physiology, and morphology, as well as potential impacts to their species status in the face of climate change and urban development.

Jennifer Cary Vaughn grew up in Dallas and earned her bachelor’s degree from Austin College, a master’s degree from Humboldt State University (Arcata, California), and her PhD in Wildlife from Texas A&M University. She is currently teaching Environmental Science and Biology at Collin College’s Frisco campus.

Photo by Jennifer Vaughn

Turtles with Michael B. Keck

Watch Video Presented May 8th, 2021

PDF Presentation

Fifteen species of turtles potentially occur at Hagerman National Wildlife Refuge. In this talk, Mike will explain how to identify the turtles of Hagerman NWR, and he will talk 

Photo by Brenda K Loveless

about the natural history of these turtles, including diet, reproduction, and geographic range.

Michael B. Keck grew up in Fort Worth. He received his Ph.D. in Quantitative Biology from the University of Texas at Arlington. His main research interests were the ecology and physiology of snakes. Since 2001, he has been a biology professor at Grayson College.

Butterflies with Laurie Sheppard

Watch Video  Presented on April 10, 2021

Butterfly watching at Hagerman NWR and photographing these colorful, engaging insects have increased in popularity in recent years, primarily because of the installation of the Butterfly Garden. With the increased interest and added attention, since 2016, 30 new species have been verified as seen in Grayson County. One of these is the Frosted Elfin, a small spring butterfly that is being considered for listing as an Endangered Species. Come learn more about some of Grayson County’s less common butterflies and where you can see them (hint – many are not found in the Butterfly Garden).


Laurie Sheppard is a Texas Master Naturalist and a long-time member and volunteer with Friends of Hagerman. She became interested in butterfly identification and photography while living in Frisco, TX. After retiring from Hewlett Packard Enterprises, she relocated from Collin County to Grayson County so she could be closer to the refuge. Laurie enjoys searching for and learning about new butterfly species. She has created several documents and handouts to assist the Butterfly Garden Docents and inform visitors, including the Beyond the Butterfly Garden series and Weekly on the Wing. She is often present at Butterfly Garden Walks and loves to share her passion for butterflies with visitors.

Photo of American Lady Butterfly by Laurie Sheppard

Birding By Ear: Non-Passerine Version
With Dr. Wayne Meyer

Watch Video  Presented on March 13, 2021

Birds can be hard to find, especially when the trees start leafing out in the spring. However, the birds become very vocal during the breeding season, so if you can recognize the sounds you hear, it will give you a hint where to look for that singing bird. This month’s program will teach ways to learn bird songs emphasizing common local birds so you can get a head start on finding those pesky lurkers.  This time around, we will work on the non-passerines, the so called non-song birds.

Wayne Meyer is Associate Professor of Biology at Austin College, where he has been teaching for 27 years. He started birding at 13 in Connecticut. In 1993 he finally achieved his life’s dream of being paid to look at birds when he joined the faculty of Austin College. He has birded both coasts of the U.S. extensively and has spent a quarter century birding in Texas and Oklahoma. The proximity of Austin College to Hagerman NWR has made research on prairie birds easy and convenient and he has been studying song learning and singing in Painted Buntings for over a decade. Meyer is also a sought-after speaker for Master Naturalist groups and a frequent speaker at the Friends of Hagerman NWR Second Saturday programs.

Mountain Lions with Jessica Healy

Watch Video   Presented on February 13, 2021

Which animal do you think has the greatest number of names (40 of them in English alone)? Here's a hint: painter...catamount...panther...puma...got it yet? It's the mountain lion (or cougar or 'mountain screamer' or 'ghost cat')! There are almost as many opinions about this big North American cat as there are names for it. Some people think of it as a vicious killer, others as a misunderstood loner. Either way, we can all agree that the cougar is one for the record books. With the largest range of any wild land animal in the Americas, cougars are found from the Yukon Territory in Canada to the southern tip of South America. Come hear Mammalogist Dr. Jessica Healy of Austin College talk about the biology, ecology, and natural history of the second biggest cat in North America.

Dr. Jessica Healy, PhD is an Associate Professor of Biology at Austin College in Sherman, TX. Originally from Iowa, Dr. Healy attended Colorado State University for graduate school, receiving a PhD in Zoology in 2010. Dr. Healy primarily studies the physiological ecology of hibernating species like ground squirrels, but as a Mammalogist has an interest in the natural history and ecology of all mammals.

Bluebirds with Bert Garcia

Watch Video  Presented on January 9, 2021

(Advance the video to 6:00 for the presentation)

This presentation will cover bluebirds in general as well as the Friends of Hagerman bluebird program which monitors some 50 plus bluebird boxes during the bluebird nesting season beginning in late January and lasting through mid-August every year.  Species specifics, habitat, range and many other characteristics of the Eastern Bluebird will be covered as will be the NestWatch nationwide program administered by Cornell Lab of Ornithology under which the Hagerman program is administered.  Information, nestbox construction and placement will be covered.

Photo: Bluebirds by Laurie Blankenship-Lawler 

Waterfowl with Wayne Meyer

Presented on November 14, 2020

As winter nears, the waterfowl for which Hagerman NWR was originally established are moving.  In this presentation, you'll learn about all the geese and ducks that visit our refuge and why they come.  

Dr. Wayne Meyer is Associate Professor of the Biology department at Austin College, where he has been teaching for 27 years. He started birding at 13 in Connecticut. In 1993 he finally achieved his life’s dream of being paid to look at birds when he joined the faculty of Austin College. He has birded both coasts of the U.S. extensively and now has spent a quarter century birding in Texas and Oklahoma. The proximity of Austin College to Hagerman NWR has made research on prairie birds easy and convenient and he has been studying song learning and singing in Painted Buntings for over a decade. Meyer is also a sought after speaker for Master Naturalist groups and a frequent speaker at the Friends of Hagerman NWR second Saturday programs.

Photo by Bryon Clark

Native Bees with Dr. Loriann Garcia

Presented on October 10, 2020

Did you know there are over 4000 native species of bees in the United States, around 700 of which are in Texas?  From this webinar you will learn about not only about their diversity and ecology but also how to support native bee populations. 

Photo by Jeffrey Gladden

Birds of Borneo with Dr. Doug Wood

Presented September 12, 2020

Dr. Doug Wood’s fascinating audiovisual presentation will cover Dr. Wood’s birding trip to Malaysia and Borneo during Summer 2019.  He will show photos of birds, mammals, reptiles, habitat, and more from his trip.  Dr. Wood will include discussion about Malaysia and Borneo with regards to conservation issues, animal behavior, and global birding. 

Dr. Doug Wood is a Professor of Biological Sciences at Southeastern Oklahoma State University and has taught

there since 2001.  He originally hails from Lawrence,   Kansas, but his academic wanderings earned him his BA in Biology from Boston University, MS in Zoology from Eastern Illinois University, and Ph.D. in Forestry and Wildlife Ecology from Mississippi State University.  Currently, Dr. Wood teaches a wide variety of classes in the wildlife and zoology fields including Ornithology, Field Ornithology, Zoology, Mammalogy, Wildlife Management, Conservation of Natural Resources, and Bioethics.  Dr. Wood’s specialty is Ornithology and he has authored or co-authored 50+ research papers on a wide variety of topics including brood parasitism, stopover ecology of migrant birds, and the ecology of cavity nesting species ranging from Red-cockaded Woodpeckers to Prothonotary Warblers to Tree Swallows, plus whatever his graduate students wish to study.  Dr. Wood is an avid birder and amateur photographer; he has birded in >30 countries prior to the Covid.

Photo: Banded Broadbill By Doug Wood 

Owls Of Texoma with Dr. Wayne Meyer

Presented August 8, 2020

Owls--birds of mystery--how much do you know about them? There are a number of myths accepted by lots of people that actually aren’t true.  There are also a lot of things that people don’t realize about them.  Come learn the truths and untruths about owls, then learn about the owls we have in Texoma and how to attract them.

Dr. Wayne Meyer is Associate Professor of the Biology department at Austin College, where he has been teaching for 27 years. He started birding at 13 in Connecticut. In 1993 he finally achieved his life’s dream of being paid to look at birds when he joined the faculty of Austin College. He has birded both coasts of the U.S. extensively and now has spent a quarter century birding in Texas and Oklahoma. The proximity of Austin College to Hagerman NWR has made research on prairie birds easy and convenient and he has been studying song learning and singing in Painted Buntings for over a decade. Meyer is also a sought after speaker for Master Naturalist groups and a frequent speaker at the Friends of Hagerman NWR second Saturday programs.

Photo By Laurie Blankenship Lawler

The Brown Recluse Spider With David Parsons

Presented on July 11, 2020

The Biology, Behaviors, an Integrated Pest Management of the Brown Recluse Spider.




Friends of Hagerman NWR

The refuge is open from sunrise to sunset every day of the year, drive on any road unless gated.

Admission to the refuge, parking and most events/activities are free of charge.

6465 Refuge Road

Sherman, TX 75092

Contact Us

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Please add friendsofhagerman@gmail.com to your contacts to ensure delivery of registration confirmations, account information and the Featherless Flyer

Special thanks to Nancy Miller for the amazing photo of the Visitor Center 

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