Friday, January 26, 2018

Viewing Landscapes the Way Bats Might View them: Little Brown Bat Roost Use in Colorado

Unfortunately, North American bat populations have been struggling to overcome the impacts of a new disease (white-nose syndrome;, moralities at wind energy facilities (, and declines in insect prey ( These challenges have bat biologists and conservation biologists scrambling to figure out how best to maintain populations of these nocturnal wonders. Yet, strategizing for these threats requires an understanding of the natural history and population ecology of these poorly-understood species.

Zoologists Rob Schorr and Jeremy Siemers of the Colorado Natural Heritage Program are trying to fill in the blanks regarding population dynamics of one of the bats most affected by white-nose syndrome, the little brown bat (Myotis lucifigus). For 3 years, Schorr and Siemers have been conducting mark-recapture studies of little brown bat maternity colonies in northwestern Colorado, and, in 2017, recruited two ambitious Colorado State University undergraduate researchers to understand what other roosts little brown bats use. These talented undergraduates (Kira Paik and Toryn Walton) tracked little brown bats that were fitted with small radio-transmitters. They discovered that the bats tended to return each night to roosts that are within a couple miles of the main maternity colony.

In addition to following them around, the researchers decided to get a peek at what these bats see from these newly-discovered alternate roosts. They employed a DJI Phantom 3 drone to take video from above each roost to look at the surrounding landscape. Although difficult to quantify, the video (this one from the main maternity colony) reveals what might be interpreted as a “neighborhood” with most roosts within sight of each of each other (within <2 miles). It is unclear why little brown bats return to roosts within close proximity, but it may have something to do with access to cohorts, available prey, and water resources.

See the CNHP drone in action the video below!

Monday, December 4, 2017

Talking Myrmecophily: Tristan Kubik Presents His Findings at the High Country Lepidopterists Society

The High Country Lepidopterists Society hosted their 28th annual meeting at Colorado State University this December, and CNHP had a representative presenting his research and pal-ing around with the who’s-who of Colorado’s butterfly biologists. Undergraduate Tristan Kubik, who has his research project “Facultative myrmecophily in the hops blue butterfly (Celastrina humulus)” in review in the journal Entomological News, presented his findings to an audience of approximately 30 entomologists. Tristan conducted this research prior to his sophomore year, and has since developed research to study firefly populations along the Front Range of Colorado. He has proposed population sampling for the rare honey ants of Garden of the Gods Park in Colorado Springs. Congratulations, Tristan!
Dr. Paul Opler displays the conference program and introduces Tristan.

Tristan acquaints an audience of lepidopterists to myrmecophily.

Tristan talks about the variety of ants seen tending hops blue butterfly larvae.

Friday, October 27, 2017

Understanding the Complexity of Little Brown Bat Summer Populations

North American bats have been experiencing unprecedented declines because of a novel disease called white-nose syndrome, wind energy conflicts, and likely because of declines in their insect prey. White-nose syndrome is a disease caused by a cold-loving fungus, and when hibernating bats are infected the fungus shows itself as a white fuzz on the muzzle, ears, and face of bats. When the disease hit eastern bat populations the evidence was clear, as hundreds of dead bats were found at the openings of caves that used to be home to thousands and millions of bats. In western North America, understanding when such a disease hits will be more challenging because many winter roosts house much fewer bats. For example, in Colorado, the largest winter colony of bats is approximately 600.

Because of a lack of large winter colonies, Colorado Natural Heritage Program zoologists Rob Schorr and Jeremy Siemers are turning their attention to monitoring summer colonies. Since 2014, Schorr and Siemers have been conducting mark-recapture studies of little brown bat (Myotis lucifugus) maternity colonies in northwestern Colorado. They have inserted passive integrated transponder (PIT) tags in >1,000 bats, and rigged their roosts with PIT-tag reading antennas to record the arrivals and departures over the summer. These data are valuable for estimating survival of bats and understanding fidelity to roosts.

This year Schorr and Siemers recruited two ambitious Colorado State University undergraduate researchers, Kira Paik and Toryn Walton, to understand what other roosts little brown bats use. Paik and Walton spent the summer tracking 22 little brown bats that were fitted with small radio-transmitters. They discovered that the adult female bats, despite traveling over 30 miles on their evening feeding travels, tended to return each night to roosts that are within a couple miles of the main maternity colony. This knowledge is extremely valuable for understanding where additional mark-recapture effort should be directed if biologists want to identify bat population trends.

Little brown bats after being tagged.

Siemers & Schorr marking little brown bats. 

Little brown bats flying around one of the maternity roosts.

Paik & Walton with the field vehicle for tracking telemetered bats.

Paik at the harp trap with a captured bat.

Walton tracking one of the telemetered bats.

Monday, October 16, 2017

2017 Colorado Rare Plant Symposium

Botanists and members of the Colorado Rare Plant Technical Committee (RPTC) were among the group of nearly 60 people gathered at Colorado College in Colorado Springs, CO, to attend the 14th Annual Colorado Rare Plant Symposium. The symposium is held each fall in conjunction with the Colorado Native Plant Society’s (CoNPS) annual meeting, and is hosted by the Colorado Natural Heritage Program (CNHP) and Denver Botanic Gardens (DBG).

Attendees included professional and amateur botanists with a common interest in Colorado rare plants and their conservation. This year Jill Handwerk (CNHP) presented data and photos of rare plant species known from southeast Colorado, along with the critically imperiled (G1) and federally listed plants species of Colorado. New this year was an afternoon review of the U.S. Forest Service (USFS) and Bureau of Land Management (BLM) sensitive species, led by Steve Olson and Carol Dawson, respectively. Additionally, Tim Hogan (CU Herbarium) provided herbarium specimens of the southeast Colorado rare species. The presenters encouraged participants to share their observations about the highlighted species and learn the latest information on Colorado’s rare plant conservation efforts.

Here are some highlights from the 2017 Symposium: 

New populations of rare plants reported in 2017 included populations of West Silver bladderpod (Physaria scrotiformis) and Gibbens’ beardtongue (Penstemon gibbensii).

Genetic studies continue to answer taxonomic and management questions for some of our state’s rarest species, including: boatshaped bugseed (Corispermum navicula), Mancos Shale packera (Packera mancosana), Kremmling beardtongue (Penstemon penlandii), North Park phacelia (Phacelia formosula), in addition to Sclerocactus species of western Colorado and eastern Utah.

Habitat was protected by the Colorado Natural Areas Program for Pagosa skyrocket (Ipomopsis polyantha) with the purchase of 88 acres of occupied habitat. Pagosa skyrocket is endemic to the Pagosa Springs area and is federally listed as threatened.

Steve Olson (USFS) provided an update on upcoming changes in how the USFS regional sensitive species lists are developed. The USFS is moving towards Species of Conservation Concern which must focus on ecological conditions, and will be based on NatureServe G and S ranks. Existing Sensitive Species will remain in effect until new management plans are developed for each forest.

Additional afternoon presentations were as follows: Raquel Wertsbaugh with the Colorado Natural Areas Program (CNAP) discussed the recent incorporation of rare plants into the State Wildlife Action Plan and the implications for land management and conservation. Jessica Smith (CNAP) discussed the implementation of monitoring for Pagosa Skyrocket at the newly acquired state owned property. Susan Panjabi (CNHP) gave a brief presentation regarding recently developed Best Management Practices for Roadside Rare Plants, and an overview of the online Colorado Rare Plant Guide. Moderator Jennifer Neale (DBG) concluded the symposium with a discussion of how we, as a group, can share our conservation successes with a wider audience.

For more information: 

All of the information from this meeting as well as previous symposia is available online at the Colorado State University, Colorado Natural Heritage Program (CNHP) website:

The Rare Plant Symposium is open to anyone with an interest in the rare plants of Colorado. For more information contact Jill Handwerk at or Jennifer Neale at and check the CoNPS website ( for details as they become available about next year’s symposium.

Location of SE Colorado G2G3 plant species. 
Survey site for Pagosa Skyrocket. 
Pagosa Skyrocket.

Monday, October 2, 2017

Chiroptophilia - A Post-CNHP Adventure

By Savanna Smith
(former CNHP work study)

As a Chicago Botanic Garden Conservation and Land Management botany intern at the Shoshone Field Office of the BLM, my love for plants has grown exponentially this summer. I’ve gotten to know the best method for beating the seeds off a Purshia tridentata bush, smelled many a sagebrush, and puzzled over whether or not a Penstemon’s anthers dehisced from the center or the sides. However, I can’t deny my roots in the field of wildlife biology, which is what I studied as an undergraduate. As a climber, it seemed natural to be interested in bats since they often roost in the cracks and crevices only accessible to rock climbers. (For any other wildlife-enthusiast climbers out there, you should check out Climbers for Bat Conservation on Facebook, a cool citizen science project!) My undergraduate thesis research dealt with the acoustic side of bat science, but I didn’t participate in any of the field work for the data. So, you can imagine my excitement when I learned that I would get to assist in several bat-related projects this summer.

The first project involved setting up stationary acoustic bat detectors with Ross from Idaho Fish & Game - this work was conducted for the North American Bat Monitoring Program, a continent-wide protocol aimed at gathering data on the status and trends of bat populations across North America. After securing these detectors during the daylight, we waited until nightfall to conduct mobile acoustic surveys. This involves attaching a bat detector on top of the truck and driving at a constant speed for at least 25 km, all while recording the bats flying overhead. This was fun because I got to watch the calls coming in on a spectrogram in real time.

Last week, myself and other interns had the opportunity to attend a bat bioblitz - an event where scientists attempt to capture all the biodiversity in an area. We set up triple-high mist nets over the river and patiently waited for bats to fly in. We saw and recorded many bats, but only managed to trap two in the nets. Regardless, it was really cool seeing them up-close and learning how to take measurements. At our station, we captured an adult female silver-haired bat (Lasionycteris noctivagans) and a juvenile male Yuma myotis (Myotis yumanensis).

We camped out after the bioblitz and got a quick night of sleep before returning to the office for a day of caving in Gypsum lava tube, the second largest lava tube in the continental US! This was a new experience for me, and I enjoyed the pressing silence and impenetrable darkness that each bend in the passage concealed. In the tube, we found pack rats, a jackrabbit carcass, and even a few bat friends hanging out almost two miles into the tube! It was a great experience to put myself in such a different environment.

I’m thankful that this internship has allowed me to gain experience in a variety of areas, especially since bats are creatures I’ve been interested in for a long time. I only have six more weeks left here in Idaho, and I’m excited to see what’s next.
Sunset view before the mobile acoustic transect.
Adult female silver-haired bat. 
Juvenile male Yuma myotis. 
The entrance to Gypsum lava tube.
Jackrabbit carcass.
Kind of low quality photo of the inside of the tube - check out the multiple levels!

Monday, September 11, 2017

Neal Swayze's Crazy Daisy Adventure!

By Neal Swayze 

This past summer I was chosen as a Siegele Intern to work with the Colorado Natural Heritage Program. The internship lasted a total of ten weeks, with eight individual trips to different locations all around Colorado. I asked for the total CNHP experience, and did I get one! Working with a total of ten CNHP mentors, I learned botany, biology, field protocols, flexibility, teamwork, adaptability, and much more. It was a challenge to constantly be traveling and learning new tasks each week, but it was wonderful and exciting. Fieldwork was described to me as exhausting but ultimately rewarding, and I wholeheartedly agree! Nothing can compare to camping, working and living outdoors all summer. I am extremely grateful to have had the opportunity to contribute to meaningful conservation while having lots of fun.

Over the course of the summer, I traveled to Norwood, Great Sand Dunes National Park, Colorado Springs, Steamboat Springs, Leadville, Gunnison, Pinyon Canyon Maneuver site, and Saguache County. I contributed to a wide variety of conservation work, including rare plant monitoring/surveys, wetland/ungulate use research, wildlife surveys, small mammal trapping, bat monitoring, sagebrush sampling, a bio-blitz, and finally pitfall trap setup/lizard surveys. It was an eventful summer, and I got a true taste of conservation research while learning the skills necessary to be a member of a conservation field crew. I learned how to be ready and flexible for anything nature could throw my way, while still enjoying the outdoors.

One of my favorite experiences was working on the wetlands at Great Sand Dunes National Park. I worked with other field techs to collect extensive quantitative measurements of wetland quality. We looked for traces of ungulate use including poop, grazing, and tracks. We also collected extensive botany data and water quality measurements. We had to dig small monitoring wells, as well as fix and repair broken ones. I learned how to thoroughly use a GPS, how to drive a 4 wheel drive vehicle, how to set up wetland monitoring plots, how to measure well depth, and how to use, clean, and maintain a water quality probe. I really enjoyed working with the park rangers and field techs, and I learned more than I could have ever expected.

It was a powerful experience to get out in the field, which was something I felt I was missing in my undergraduate education. I learned the value of raw experience, and how nothing else can replace walking around and observing the natural world. Learning from lectures and books is valuable and helpful, but nothing compares to learning out in the field. I highly recommend the CNHP Siegele internship, as I feel it helped catalyze my understanding of ecosystem ecology as well as link together previous knowledge from school with the real world. Plus, if you get the internship you get to see stunning, mild blowing sunsets, and many other beautiful natural vistas! It was a blast of a summer, and it was over before I knew it. I cannot wait to get back into the field, and back to conservation science. I look forwards to more adventures with the CNHP!

Sunset at Lake Catamount, Steamboat Springs.
Physaria pulvinata at Norwood.

Dee and Sarah conducting monitoring plots for Physaria pulvinata

Tyson looking out over the river that runs through Great Sand Dunes. 

Bobby, Neal and John after completing lizard pitfall traps in Pinyon Canyon. 

Wednesday, August 30, 2017

Conservation Easement Study

CNHP is pleased to share the study, "Colorado’s Return on Investments in Conservation Easements: Conservation Easement Tax Credit Program and Great Outdoors Colorado." This study evaluates public benefits received by Coloradans from state investments in conservation easements. The study found that each dollar invested by the state produced benefits of between $4 and $12 for Coloradans in addition to protecting numerous key conservation priorities. To learn more, please see the CSU press release linked below.

It was fantastic to work with our colleagues in the Warner College of Natural Resources and @CSUCollegeAgriculturalSciences. This report would never have been possible without help from Great Outdoors Colorado - GOCO, the land trust community and a generous private donation to help fund our work. Thanks to everyone who made this important work possible and we hope the study provides useful information on the State's return on investment for private land conservation efforts.

Pleasant Valley near Bellvue, Colorado

Wednesday, July 19, 2017

Rifle and Carbondale Bioblitzes

By Riley Reed

What is a bioblitz?
Last week as a CNHP intern I had the opportunity to participate in two bioblitzes in Rifle and Carbondale, Colorado! A bioblitz is when a team of scientists travels to a designated area to best identify all the flora and fauna species. The scientists are given a twenty four hour period to find, identify, and document all the species that they can. Pictures or live samples are taken of each species that is documented. The purpose of the bioblitz is to gather information about the biodiversity of the area. This can help landowners manage their property more efficiently and promotes the best land use practices. It can also bring attention to any threatened and endangered species that are on the property.

First time? Won't be your last!
For many of the interns and volunteers, including myself, it was our first time learning about and helping with a bioblitz. It was a great learning opportunity that allowed us to get hands-on experience in a relaxed and fun manner. Many different fields of natural resources' work were covered, such as zoology, botany, restoration ecology, and human dimensions. All of the CNHP scientists were very helpful and passionate about spreading their knowledge and teaching the interns and volunteers.

Where did we go?
A large group from CNHP consisting of zoologists, botanists, interns, and volunteers left Fort Collins and headed west to the bioblitz location on a ranch in Rifle. The Ranch had a wide range of habitats that provided a high biodiversity rate relative to the size of the property. The data that was collected on the property was achieved through a variety of different methods. Birds and other wildlife were spotted during flash surveys of the property; camera traps were also set up at various locations. Bats were documented using a sonogram that was set up near the pond at night. Insects were captured with insect nets and a UV light trap at night. Fish were documented with the help of Colorado Parks and Wildlife and one of their fish shocking experts. (I would like to note that no fish were hurt during the fish shocking studies.) Trees, forbs, and grasses were identified and keyed out by the botany teams by walking the property. One specialist group of individuals from the botany team focused their entire time searching and identifying mosses and lichens. Once all of the species were identified to the best of our ability, we packed up and headed to our next location 45 minutes from Rifle around Carbondale.

Change it up?
The Ranch in Carbondale offered a good change of scenery and a new challenge to identify all the species on this section of land. Methods that were used in Rifle were repeated with slight modification to suit the new landscape. The zoologist team had wonderful success catching and identifying a wide variety of new butterflies, and the botany team had great achievements monitoring a rare species of plant known as good-neighbor bladderpod.

Overall, this was a life changing event, and I look forward to participating in future bioblitzes.