Young Conservationist Makes a Difference

Young Conservationist Makes a Difference
12/6/18

Anyll Markevich is a young man with a mission. He writes to Merlin, “I became interested in bats thanks to your book, The Secret Lives of Bats. It is one of my favorite books, and I have recommended it to more people than I can count! I have always known bats were cool, but not to the extent I discovered in your book. I want to be a wildlife biologist or ethologist when I grow up, so your book easily fascinated me.”

 

Anyll is far more than just interested. He’s also busily helping bats. He has written letters to editors in response to our Bat Flashes but wanted to do more. Using photos from our photo gallery, he designed his own bat brochures which he handed out to people at a local pedestrian mall. However, people were preoccupied with shopping and didn’t seem too interested.

 

He then emailed Merlin for advice on how to build bat houses that would best accommodate bat needs in the mountain climate of Colorado. He built nine, keeping one for himself, and sold seven to raise funds he donated to MTBC to help bats. But, being a very inventive 14-year-old, he passed his $100 gift through his father, who’s company matched his funds dollar for dollar through American Online Giving Foundation.

 

Lacking an ideal location for his bat house, he had to mount it a bit low, late in 2016. By the next summer, he found his first occupant. This year, Anyll and his mom noticed several bats flying around their yard for the first time. He checked his bat house and counted up to five. They’ve now left for winter, but he’s optimistic that he has the beginning of a colony. He’ll soon contact his customers, each of whom received instructions and one of his brochures. He’s hoping to hear of further success.

 

In his most recent communication, Anyll reported, “There is an exciting new development! Our local library (Boulder Public Library) wants me to build a four-chamber nursery bat house.” Furthermore, he got to meet professor Rick Adams, a well-known bat researcher and fellow conservationist from the School of Biological Sciences at the University of Northern Colorado. Rick will be consulting on placement of Anyll’s bat house, making Anyll very proud! His next objective is to convince the librarians to permit him to provide his brochures to interested library users.

 

 

 

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Bat Flash! Action Needed for Durian Pollinators at Risk

The durian is considered the king of fruits throughout Southeast Asia, but it can’t be produced, even in orchards, without bats to pollinate its night-blooming flowers. This important crop could be lost without better appreciation of the key contributions of bats and their habitat needs.

It’s time to give these bats a voice. Rimba’s media statement: Deforestation for Durian Plantations Poses Serious Long-term Risks to Industry’s Productivity and Profitability calls others to action on behalf of durian pollinators. The Star recently published an article, Durian farmers pay the price in the end, highlighting Rimba’s work, reaching more than 7 million unique visitors.

Malay Mail published another supporting article, Weighing in on bats and durians, which boasts over 3 million unique visitors not including the printed version.

The Rimba news release emphasizes the serious impact of deforestation-driven durian expansion to all relevant parties. They call on the Ministry of Agriculture and Agro-based Industry, the Department of Agriculture, the wider durian industry, and individual durian farmers to “think long-term and pursue good agricultural practices for growing durian that is sustainable, contributes to healthy ecosystems, and provides a future for the Malaysian durian industry and Malaysian durian lovers.”

The overall objective of their plan is to promote coordinated action worldwide to safeguard wild and managed pollinators and promote the sustainable use of pollination services, which are vital to both ecosystems and agriculture. We are delighted to see Rimba’s efforts on behalf of bats and the economies they support getting this well deserved attention. Let’s use our voices to amplify the message!

 

TAKE ACTION!

Our combined voices can make a difference. Choose any or all means of contact to reach out to The Star and Malay Mail editors to thank them for sharing this important reporting in your own words. Editors do take notice. Remember, your response can be very simple such as, “I greatly appreciate your support of bats and protection of sustainable durian production.” Editors just need to know you like or dislike an article in order for you to have impact. It’s numbers that count. Bats need all of you!

 

A cave nectar bat (Eonycteris spelaea) pollinating durian flowers. Durian fruits sell for billions of dollars annually in SE Asia, but flowers must be pollinated by bats in order to set fruit. Cave nectar bats and their larger flying fox relatives are its primary pollinators. These bats traditionally formed large colonies in caves but are in alarming decline in most areas, often overharvested for human consumption or killed during careless limestone extraction. This, combined with deforestation, poses a direct threat to durian production, as well as to a variety of other important products.

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Batman Returns

Last week, Merlin returned to his favorite institution of science, the Milwaukee Public Museum, where he spent his first 11 years as a young scientist (1974-86). He served as Curator of Mammals, with outstanding freedom to study and photograph bats, often funded and assisted by museum donors and volunteers, especially Verne and Marion Read and their family. Merlin resigned his position there in 1986 in order to devote full-time to the conservation of bats. He last spoke there some 15 years ago, but was still remembered and welcomed “home” by an extra large and enthusiastic audience despite having to compete with an important Green Bay Packers football game. Anyone who knows Wisconsin is aware that competing against the Packers is never easy!

Merlin’s much loved and never-to-be-forgotten Milwaukee mentors, Verne and Marion Read making friends with flying foxes in Australia.

His talk, titled The Incredible World of Bats, was a part of the museum’s Science on Tap Speaker Series, introduced by Mitch Teich, Executive Producer and Co-host of WUWM Milwaukee Public Radio’s “Lake Effect” program, who also interviewed Merlin on the show.

Merlin dedicated his talk to the  memory of Verne and Marion Read, who funded and participated in many of his earliest research and conservation initiatives, and continued to support his conservation efforts for decades even after his departure from Milwaukee. We especially enjoyed the generous hospitaltiy of our Milwaukee hosts, Ross and Mary Read, who along with brothers, Sandy and Tom, continue to provide much appreciated support for MTBC.

The museum takes great pride in its large, open-air dioramas that integrate natural history and anthropology. In fact, the world’s first diorama is still on display.

 

A gentle reminder of why Merlin prefered to spend winters studying bats in tropical climates.

 

Enjoying the museum’s butterfly garden!

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48th NASBR in Puerto Vallarta, Mexico

This was Merlin’s 48th and Teresa Nichta’s 1st NASBR.

The 48th Annual North American Symposium on Bat Research conference was held in Puerto Vallarta, Mexico October 24-27. Hurricane Willa threatened but failed to dampen the enthusiasm of attendees who ended up enjoying perfect weather in a beautiful location. Our hosts Jorge Ortega and Rodrigo Medellin did a great job, and we were very favorably impressed with the outstanding conservation orientation of Mexican colleagues. Mexico’s students had an unusual opportunity to present their projects, ranging from bat pest control in walnut orchards to seed dispersal and the pollination of agaves from which all tequila is derived. Additional areas of conservation interest involved impacts of wind turbines, management of white-nose syndrome, and protection of roosts.

Rodrigo Medellin welcoming colleagues to the 48th meeting of the North American Symposium on Bat Research.

Many attendees were delighted to see Merlin and meet Teresa and share insights on the needs of bats. Based on his 60 years of field experience, Merlin has become increasingly concerned to see so many of today’s remaining bats living in marginal, sometimes barely survivable conditions, especially in caves. These unfortunate circumstances easily can be misinterpreted as what bats need, leading to inappropriate conservation measures. He was encouraged to see rapidly growing awareness of the futility of stopping or curing white-nose syndrome, with increasing focus on protection of survivors from disturbance at roosts. Where bats were protected from disturbance, signs of stabilization and recovery were reported.

Danielle Cordani, Vice President of the newly formed Bat Association at Texas State University, discussing her poster on bats at wind turbines with Merlin while Association President, Jacob Rogers, listens.
Teresa enjoying hotel flowers while Shahroukh Mistry, Associate Program Director, greets Merlin in background.
Canadian, Melissa Donnelly, explains her poster on Cuban bats.
Co-host, Rodrigo Medellin, shows off a freshly caught free-tailed bat.
Participants engaged in lively discussion at the annual Diversity in Science Breakfast.
Rodrigo leading strategic planning discussion, setting research priorities for lessor long-nosed bats (Leptonycteris yerbabuenae) in Mexico.
Dia de los muertos, Day of the Dead, celebration of the world’s extinct bats, prepared by Canadian, Charles Francis. This multi-day event in Mexico is a national holiday focused on remembering and honoring friends and family who have died.
Merlin congratulating Rodrigo on his outstanding conservation leadership in Mexico and throughout Latin America.

 

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Collaboration to Improve Housing for Bats

9/20/18

Harrison (standing) and Christopher showing off their new BatBnB houses.

For the past 18 months Merlin has been assisting Harrison Broadhurst and Christopher Rannefors in creating a line of designer bat houses, attractive to both home owners and bats. Their curving architecture isn’t, just pleasing to the eye. At least theoretically, it may increase the area available for roosting, since most bats appear to prefer to line up with faces exposed to the outside air, not to another’s posterior, quite understandable!

The new houses are constructed of kiln-dried, sustainably sourced, three-quarter-inch western red cedar, with each piece dovetailed and caulked, thus minimizing leakage. Roosting chambers are extra tall (20-26 inches) and vented to ensure thermal gradients preferred by bats. All landing and roosting surfaces provide one-eighth-inch-deep cross cuts at half-inch intervals, ensuring maximum footholds for young bats. By avoiding plywood, the possibility of early deterioration and potential off-gassing are finally eliminated. Furthermore, treatment with Thompson’s WaterSeal Semi Transparent Stain & Sealer will additionally protect against warping.  BatBnBs come with complete instructions and are easy to mount.

We’re proud to be a part of Harrison and Chris’ efforts on behalf of bats and a safer environment. They’ve been featured in dozens of leading publications and have even appeared on several television shows. You can learn more about them and obtain your own BatBnB by visiting their online shop. By using the code MERLIN when ordering you will be given a 10% discount, and the company will donate to MTBC an additional 5% of all orders using this code. Feel free to share this discount and BatBnB’s website with friends and let us know about your progress. By purchasing a BatBnB, you can reduce the threat of harmful pesticides in your neighborhood and help MTBC educate the world about these invaluable neighbors.

 

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Partnership for Bat Conservation and Management Training

9/19/18
By Merlin Tuttle

John Chenger and Julie Zeyzus interviewing Merlin for training video on bat cave management.

In early August, we accepted a partnership invitation to develop a series of bat conservation and management training videos. Though growing numbers of biologists are studying bats, few have the breadth of experience essential to meet their widely varying conservation needs. Each species has unique requirements. In order to better share my nearly 60 years of personal experience, John Chenger founder of Bat Conservation and Management, and Janet Tyburec founder of Bat Survey Solutions, invited me to collaborate. They are providing video shooting and editing, featuring my narration and illustrations.

Teresa Nichta (left) and Julie Zeyzus shooting slow motion video of Brazilian free-tailed bat (Tadarida brasiliensis) emergence.

 

 

 

Four programs are now being edited. The first, tentatively titled “Win Friends, not Battles,” explains key approaches that have most effectively won long-term cooperation. The second features the worldwide importance of bats. The third addresses greatly exaggerated disease claims, and the fourth deals with assessing cave suitability for bats and special long-term management needs.

Bad gate that caused abandonment by a large colony of cave myotis (Myotis velifer). New owners removed the gate, and the bats are now gradually returning.

Under John’s guidance, we began field shooting on August 15, greatly aided by Teresa Nichta and John’s associate, Julie Zeyzus. For the next 10 days there was little time for sleep or even eating. On my birthday, we spent seven hours filming underground, a great antidote for thinking of getting old!

Measuring roost stains left by a formerly large colony of cave myotis in a Texas cave. Stains can last for centuries, providing an invaluable estimate of past colony size.

 

Illustrating the need for such education, one of the caves we visited in a protected nature reserve, had lost its entire colony of tens of thousands of cave myotis when fire protection permitted entrance blockage by vegetation. Another cave, also well protected by its owner, had overgrowth of an invasive, introduced plant that could have prevented restoration of a formerly large colony. It only took minutes to eliminate the threat.

 

 

 

 

Videoing Brazilian free-tailed bats close-up in crevices between box beams.
Explaining how bat-friendly bridge designs have aided Texas farmers.
Sunset emergence of free-tailed bats.

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Counting Free-tailed Bats in Bridges

9/10/18
By Merlin Tuttle

Merlin inspects Brazilian free-tailed bats (Tadarida brasiliensis) moments after removing them from their bridge crevice roost for counting.

For many years we’ve wondered just how many Brazilian free-tailed bats (Tadarida brasiliensis) could cram into a single 18-inch-deep bridge crevice. Accurate counts of large colonies are difficult no matter how they’re made. However, when estimating bridge colonies, it would help if we knew the number, using an average horizontal foot of crevice.

The solution seemed easy. Two years ago, Glen Novinger, an MTBC member and I, inserted two, three-quarter-inch-thick wooden frames, each encompassing a square foot of interior space, into bridge crevices of the same width while the bats were out feeding. The idea was to later slowly remove them, forcing those roosting inside to exit into a cloth-lined bag from which we would count them.

However, the bats were full of surprises. The first night we waited patiently till half an hour after we’d seen the last ones leave—or at least that was what we thought! But when we approached to install our devices, roughly half remained inside. I couldn’t help but wonder how many emergence counts had missed those that, for whatever their reasons, didn’t emerge at sundown. (more…)

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Response to Sensational Bat Rabies Stories

Every year around this time there is a spike in needlessly sensational rabies stories featuring exaggerations of truth.  We always encourage others to respond politely to editors, authors, decision makers and media personnel when they see these. Editors’ jobs depend on readership and they do aim to please. They just need to know you like or dislike an article. Responses can be very simple such as, “I don’t appreciate  sensational  headlines or speculation that creates needless fear of bats.”

We work hard to be a source for your personal ambassadorship of bats and wish we could respond to every article, however our resources are limited. We cannot do it alone. We hope that this post will supplement your future responses when you encounter false or exaggerated bat publicity.

 

Response to Beth Skwarecki’s story “If a Bat Was in your Bedroom, You Probably Need a Rabies Shot
By Merlin Tuttle
9/1/18

Unfortunately, this well intended story is a sensational exaggeration of truth. It is correct to say that most human rabies in America comes from bats. However, put in context, it’s just 1-2 cases per year, making it one of the rarest causes of death. By comparison, just by riding one mile in a motorized vehicle, an American exceeds his/her annual risk of rabies from any source.

Because even sick bats almost never bite, except in self-defense if handled, the risk of contracting any disease from one is exceedingly low for anyone who simply leaves them alone. In Austin, Texas, thousands of people gather nightly to observe the spectacular emergences of 1.5 million bats close-up. And in decades of this exceptionally close association, no one has been attacked or contracted a disease.

Post-exposure rabies vaccinations in the United States are outrageously overpriced, currently costing from $10,000 to $22,000 per person treated. With huge profits at stake, and our CDC heavily influenced by drug companies, promotion of exaggerated fear is not surprising. Unprovoked bites are exceedingly rare, so much so that I have yet to experience one despite close association with millions of bats worldwide for more nearly 60 years.

Human rabies cases are often diagnosed post-mortem or after the patient is incoherent. Even in cases in which parents or friends report bites, the U.S. CDC reports “no bite history” unless the patient is able to confirm. Consequently, human cases, regardless of animal origin (i.e. bat, dog, skunk or raccoon) often get reported as having no bite history. Huge misrepresentation occurs when such reports are used to disproportionately frighten people of bats.

Since 1996 the CDC Advisory Committee on Immunization Practices has advised consideration of post-exposure prophylaxis for “persons potentially exposed to bats even where a history of physical contact cannot be elicited,” unless prompt diagnosis excluded rabies. Based on its independent analysis Canada’s National Advisory Committee on Immunization, opted not to follow CDC’s recommended bat policy.  They do not advise vaccination unless there has been direct contact. For detailed documentation, see Rabies in Perspective.

Millions of tourists have watched free-tailed bat emergences from the Congress Avenue Bridge in Austin, Texas over the past 35 years without anyone ever having been harmed.

 

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Bat-Friendly Bridges Help Farmers

Merlin Tuttle
9/12/18

Building bat roosts into highway bridges in farmlands can benefit farmers at little or no cost to taxpayers. Mark Bloschock, a supervising bridge design engineer at the Texas Department of Transportation, discovered the potential for bridges to help bats when he worked on Austin’s now famous Congress Avenue Bridge. As hundreds of thousands of bats unexpectedly moved in, he contacted me for advice. He soon discovered that, by simply making small adjustments in the spacing between box beams, large numbers of bats could be attracted where needed, and where they weren’t wanted, they could be discouraged by simply changing the spacing.

In 1998, when highway US 90 required two new bridges over Seco Creek, near D’Hanis, Texas, he wrote specifications that placed the box beams three quarters to 1.5 inches apart, hoping to attract Brazilian free-tailed bats (Tadarida brasiliensis) to this important agricultural area. The bats quickly moved in and soon exceeded half a million, today as many as two million.

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Our Premiere Member Cruise

At Merlin Tuttle’s Bat Conservation we’re overjoyed to finally launch our membership campaign. Members at the Leadership level or above were given priority invitations to view the famous Congress Avenue Bridge bat emergence with Merlin aboard a chartered Capital Cruises boat. We all gathered at the Hyatt Hotel’s lounge for drinks (and queso) and to meet and get acquainted. The first member to sign up for the cruise was Janell Cannon, the author of the classic children’s book Stellaluna.  Janell graciously signed copies of her book, which is celebrating its 25th anniversary!

Janell Cannon signed Stellaluna for members on the bat cruise. Ingrid Dehn, retired school teacher, had loved reading Stellaluna countless times to her students. The book is celebrating its 25th anniversary!
Bat Slide Scan Project team interns Renee Cornue and Max Gorman with supervisor Teresa Nichta (middle) enjoyed meeting participants on the cruise.

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