Celebrate International Bat Night in English church, 28 August


This 29 September video from the USA says about itself:

Bats: Guardians of the Night

Visit Bat Conservation International to learn more about these amazing species and what we can do to protect them.

From Wildlife Extra:

Unique opportunity to celebrate International Bat Night

On Friday 28 August, to mark International Bat Night, The Churches Conservation Trust (CCT) is offering wildlife enthusiasts, their families and friends the opportunity to stay overnight in a 13th century church inhabited by a colony of Natterer’s bats.

Guests are invited to sleep in the aisle of the church and sample “champing” (church camping) whilst learning more about the mysterious creatures overhead from bat experts on site.

The event will take place at The Church of St John the Baptist in Parson’s Drove, Cambridgeshire, a stunning Grade II* church which has been in The CCT’s care since 1974 and which is a long-time favourite of both bats and architecture enthusiasts.

An expert bat-handler will lead the evening with a presentation about the fascinating animals and everyone will have a chance to try out the bat detectors.

After sunset, the bats will appear from under the church roof and guests can help The CCT count them as they emerge for their night’s feeding.

The unique break was inspired by The CCT’s hugely successful champing holiday breaks, which give people the chance to stay overnight in some of the UK’s most beautiful churches.

Camp beds will be provided in the aisles of the church so guests can get some rest before rising at 4.30am to enjoy the spectacle of the bats swarming back to the church. A hearty breakfast will be provided at 8.30am.

The bat survey will be crucial in helping ecologists on site understand more about these mysterious creatures. For more information about the event please visit The CCT website here.

This event is suitable for children over eight. Families with younger children are welcome to join in without champing at the evening-only event. Tea, coffee and squash included in the ticket price and all children will receive a free bat toy!

Bat Champing Packages cost from £45 (£25 for under 16s) including breakfast, bat talks, bat detectors and bed in an aisle of a stunning 13th century church

Bat Watching Evening tickets are available for £5 (£2 for children)

New nectar-feeding bat species discovered in Brazil


This video says about itself:

Green Ambassador Brazil Bat Research

11 May 2007

With the University of Campo Grande the Green Ambassadors researched the biodiversity of bats in the Pantanal, Brazil. Where over 700 plant species depend on bats for pollination.

The video is in Portuguese, but its subtitles can be switched to English or other languages.

From Wildlife Extra:

New bat species discovered

A new species of nectar-feeding bat from Brazil has been unexpectedly discovered during a study into the whole genus of Lonchophylla.

The scientists Drs. Ricardo Moratelli and Daniela Dias examined both wild and museum specemins of L. mordax, when they realised, rather than looking at one species they were looking at two different species.

Called L. inexpectata, the new species has considerably paler ventral (abdominal) fur and some of their measurements were inconsistent with L. mordax, including differences in the skull and the teeth morphology.

The scientific description of the new species is here.

Bats hibernating and mating, new study


This video is about bat hibernation in Endless Cave, in Washington County, Indiana, USA.

From PLOS One:

Bats Swarm Where They Hibernate: Compositional Similarity between Autumn Swarming and Winter Hibernation Assemblages at Five Underground Sites

Jaap van Schaik, René Janssen, Thijs Bosch, Anne-Jifke Haarsma, Jasja J. A. Dekker, Bart Kranstauber

Abstract

During autumn in the temperate zone of both the new and old world, bats of many species assemble at underground sites in a behaviour known as swarming. Autumn swarming behaviour is thought to primarily serve as a promiscuous mating system, but may also be related to the localization and assessment of hibernacula. Bats subsequently make use of the same underground sites during winter hibernation, however it is currently unknown if the assemblages that make use of a site are comparable across swarming and hibernation seasons.

Our purpose was to characterize the bat assemblages found at five underground sites during both the swarming and the hibernation season and compare the assemblages found during the two seasons both across sites and within species. We found that the relative abundance of individual species per site, as well as the relative proportion of a species that makes use of each site, were both significantly correlated between the swarming and hibernation seasons. These results suggest that swarming may indeed play a role in the localization of suitable hibernation sites. Additionally, these findings have important conservation implications, as this correlation can be used to improve monitoring of underground sites and predict the importance of certain sites for rare and cryptic bat species.

Children’s story about bats


This video is called Fun Facts About Bats.

From the site of NASA in the USA, where the story continues:

THE STORY OF Echo the Bat

In the upper elevations of Arizona, there was a forest of tall Ponderosa pine trees. The forest was covered with snow and the evenings were quiet as animals slept through the cold winter nights. When spring arrived, the snow melted and a colony of female bats made their home in a hollow pine tree to raise their young.

Echo and his mom hang upside down safe in their tree. Echo is under his mom’s wings. There is a crescent moon outside.

Unlike birds who hatch from eggs, bats are mammals. The mother bats will give birth to their young and feed them mother’s milk. Because their pups are too young to fly and catch their food, Mother bats care for their pups during the first month.

As the warm days of spring led to summer, a baby bat was born. He had a tiny, furry body with awkward wings. His mother held him close to her and wrapped him in her wings. All day long, she could hear his chirping cry echo through the hollow tree. From that day on, his mother called him “Echo.”

Bats and Tour de France cycling in Dutch Utrecht


This Dutch video is about counting bats in Utrecht city in the Netherlands, from May to August 2015.

Utrecht is not just in the news because of bats these days.

Tomorrow, the Tour de France cycling race will start in Utrecht; with a time trial for all 198 participants.

This video shows where in Utrecht the cyclists will cycle tomorrow.

Bat colony in city park tree, video


This 26 June 2015 video was recorded by Niels de Zwarte early in the morning in a city park in Leiden, the Netherlands.

It shows a colony of common noctule bats, in a hole in a tree.

Theatened Florida bats, new research


This video from the USA says about itself:

13 February 2014

Rehabilitating a Florida Bonneted Bat and getting it to temporarily adjust to new food. Apparently, rehab is boring… Florida Bonneted bats are a federally endangered species that only exist in Southern Florida and known population estmates only in the hundreds. Personnel in the video are rabies vaccinated. Never attempt to handle a bat or other wildlife. Video shot by Dustin Smith.

From Associated Press:

Singing bats; scientists lift veil on endangered FL species

By JENNY STALETOVICH, Miami Herald | June 20, 2015 | Updated: June 20, 2015 12:19am

MIAMI (AP) — The mysterious Florida bonneted bat, a creature so elusive that biologists know of only one roost in the wild, is actually a chatterbox, far easier to hear than see.

And for that information we can thank citizen scientists. Over the past year, they recorded thousands of calls, erected bat boxes and scoured the county to paint a new picture of the under-appreciated bats and lift the veil on one of the state’s most critically endangered species.

Props also go to chance, for putting the bats within earshot of a cutting-edge bat researcher having a glass of wine in her backyard.

“Who would have thought?” said volunteer Alfonso Perez, an attorney helping create a nonprofit to support more research. “If we just sit back and smell the roses, there’s a lot of things going on.”

All the attention has generated some star treatment for the bats: their own Facebook page, parties and a corporate sponsor. Much of that can be credited to biologist Kirsten Bohn, an expert in bat songs, who began organizing outings — part party and part expedition — to collect data on the enigmatic bat, which has dwindled to a South Florida population numbering in the hundreds.

With their iPads and smart phones programmed to pick up high-frequency chirps, volunteers trained by Bohn located the first roost ever documented in Southeast Florida near the Gables Granada Golf Course in September. Her team also recorded more than 20,000 calls, providing a trove of new data that shows the pug-nosed bats feed and sing like no other bat in the United States, in a range much larger than previously suspected.

Earlier this month, Zoo Miami wildlife veterinarian Frank Ridgely released the first bat raised from infancy. If all goes well, a tracker attached to the bat could let Ridgely observe its behavior in the wild.

All this new research could ultimately help federal wildlife managers now considering conservation plans for the bat. The U.S. Fish and Wildlife Service, which added the bat to the endangered species list in 2013 — the first bat in 25 years — is expected to propose a critical habitat by the end of the year and ask for input from the public and experts.

Habitat protocols could help avoid potential problems like the scene now playing out at the Granada course, where Coral Gables launched extensive restoration work last month that includes trimming trees and removing grass without contacting federal officials. The city’s chief of landscaping, Brook Dannemiller, said the project manager checked with state officials, who signed off on the project, leading the city to believe the work would cause no harm.

But Bohn, who alerted federal agents, worries that bats with pups could roost in the trees. Stripping the grass could also affect the bugs they eat. On Friday, Service spokesman Ken Warren said the agency is looking into the matter.

If the bats are to survive, Ridgely said more aggressive steps must be taken to protect them, including surveying parks throughout the county that could take the place of lost habitat.

“The forest is never coming back in most of Miami-Dade County,” he said.

Conservation of bats has become more urgent in recent years with the spread of White Nose Syndrome, a fatal fungus, and a rise in wind turbines. Up to two million bats die each year, threatening a critical link in America’s food production. Some bats pollinate plants — imagine a world without mangoes, avocados and guava. Others, including the bonneted bat, consume massive amounts of insects that farmers, and mosquito control districts, would otherwise battle.

Florida’s bonneted bats, which are not known to contract White Nose and risk little injury from turbines, face bigger risks from pesticides and habitat loss. Because they are large and fly high, the bats need plenty of room to maneuver. Their perilously low numbers could indicate just how little open space remains in South Florida.

“Bonneted bats are like a bullet or a jet airplane,” Ridgely said. “They are built for speed and go in a straight line.”

That behavior also makes them hard to study. Try spotting a bullet 30 to 40 feet high in the air. In the dark.

Bohn knew little about Florida’s bonneted bats, officially Eumops floridanus, when she arrived in Florida after studying in Texas and traveling largely in South America to record free-tailed bats for her research on communication. In 2014, she helped author a pioneering study that used mathematical equations to first document bat singing.

In the study, scientists used the calls of several species, including free-tailed bats, Carolina chickadees, orangutans and pilot whales. For a human sample, they recorded a reading of Hamlet. It turns out the clicks and chirps that can sound like change jingling in your pocket are more like a chorus of songbirds.

Bats, the study found, don’t just chirp to get their bearings or find food, they also sing to flirt, fend off other males and call to their young. They sing from their nests and they sing when they fly. Like humans, they may have a language.

To hear most bats, calls need to be amplified using a microphone. But the bigger, lower frequency bonneted bat can usually be heard by most people, though not all. “Too many Mötley Crüe concerts,” said Ridgely, who can’t hear the calls without a microphone.

To study the bonneted bats, Bohn, who recently left Florida International University for Johns Hopkins University, first erected recorders on the Granada golf course. Amazed at the volume of calls, she began installing song meters around the county in large open areas where bats might forage — at Fairchild Tropical Botanic Garden, the Deering Estate and along the Ludlam Trail. The bats historically lived in pine rockland, where the sparse pine canopy let them cruise unimpeded. But with most rockland now gone — less than 2 percent of the historic range outside Everglades National Park remains — the bats adapted to become urban bats foraging in whatever open space they could find, like the parking lot around Zoo Miami.

Among Florida researchers, the Granada Golf Course was a well-known feeding ground. For Bohn, a move to the neighborhood in 2012 was serendipitous.

Within weeks, Bohn heard their songs, began recording them and recruited grad student Giselle Hosein. When neighbors read about their work in the Miami Herald, they contacted Bohn, who formed the Bat Squad to help collect data. At their first bat night at the golf course, Bacardi — the brand’s logo includes a bat — provided free rum as hundreds wandered around the darkened course or sat in lawn chairs gazing into the night sky.

“This is so up my alley,” said Ken Willis, who attended another bat night in May. “We know so little about them and they’re here. The bats. The foxes. They were here before us and they’re here amongst us.”

In the past year, Bohn and volunteer grad students analyzed about 25,000 calls and logged the comings and goings of bats from the roost — first reported in the 1980s but not confirmed until Bohn and Ridgely studied it — in the eaves of a house a block away on Alhambra Circle.

The data helped paint a new picture of the urban bats. Bohn found the bats call at a much lower frequency and over bigger distances than Brazilian free-tailed bats, another species plentiful in South Florida. That discovery alone, Bohn wrote in a memo to federal officials, could make a critical difference in how bats are surveyed, because it makes them far easier to identify if microphones are set at the right frequency and correctly placed.

“Basically using acoustic monitoring is the best way to go,” Bohn said. “You can have a Eumops flying by and I’ll pick that bugger up.”

Bohn picked up their calls “all over (southern) Miami-Dade County, but in very low numbers,” she said, suggesting the long-lived bats travel farther to forage than previously suspected.

Bohn also found the bats roosting and feeding in Coral Gables were sensitive to temperature, emerging from their roosts only on warm nights. Surveying during colder months, she said, could give inaccurate information.

Without funding, Bohn was unable to complete more thorough research. “I could write a 20-page paper, but I’m doing this on a volunteer basis,” she said.

In an email from Honduras Saturday, she was optimistic that volunteers would carry on, organizing bat watches and installing boxes to provide more data so she could continue her research.

So far, Bohn’s acoustic findings could help define hotspots like the Granada Golf Course, said U.S. Fish and Wildlife Service biologist Paula Halupa. But Halupa said findings on roosting patterns would need more research.

“If we can focus on areas where we know they’re at and the surrounding areas, we can minimize the risks to the species,” she said. “So it’s all good stuff.”

Halupa said she was not surprised by the extent of the bat’s range: “A lot of times people don’t find bats because they don’t take the time to look. It’s not easy work.”

The intense public interest came as a pleasant surprise.

“It’s awesome that people in their own backyards … can see this and have enough interest to collect data,” she said. “Our agencies are too small and too overwhelmed with day-to-day crises and we need to rely more on citizen scientists.”