Category Archives: Field Notes

Connecting People with Nature

Dirt, water and gravity.  Backslope, outslope, brushing, grade reversals, and tread.  McLeods, picks and Pulaskis.  
When you are hiking a trail, how much attention do you pay to the actual trail?  If a trail is well built, the engineering of the trail likely never crosses your mind.  As it should be. The purpose of a trail is to allow people to be in natural surroundings, soothing their psyches, stimulating their senses and challenging their bodies.  If the trail is poorly designed or if you have experience building a trail, the engineering of the trail may very likely be foremost on your mind.

Building a trail requires training, surveying, planning, mapping and lots of physical effort to achieve the goal of keeping water off the tread and people on the tread.  This is where the Central Texas Trail Tamers come in. Since 1993, the Trail Tamers have worked with public and private non-profit groups on hundreds of projects both large and small to plan, build and maintain sustainable trails to ensure that current and future generations will have access to nature. 

Recently, the Trail Tamers (TT) teamed up with Ecology Action to build a new trail in Ecology Action’s Circle Acres Preserve.  The TT taught an introductory class covering the basics of trail building and safety and took the class out to apply the principles in the field.  Circle Acres is ten acres of former landfill that has been successfully restored as one of the most diverse wildlife habitats in the City. Circle Acres is surrounded by Roy G. Guerrero Park and backs up to the Montopolis neighborhood. The Montopolis neighborhood, while rich in history, is now isolated, under-served and socioeconomically disadvantaged. 

The new trail, built on January 11-12, 2020, allows residents of the neighborhood to directly access the park.  It reduces walking time to the park by 25 minutes. The trail building efforts met with challenges. When I-35 was constructed, the cement from the demolished East Avenue was moved to make an enormous pile on the edge of what would become the preserve. Sand was dumped on top of the detritus and plant life grew up among the debris. Over the years, this land was used as a quarry, then as a landfill by the City of Austin and later, when the landfill was decommissioned, it was used as an illegal dump site.  When Ecology Action acquired the site they removed over a four-foot deep layer of garbage from the hillside on which the trail was built. Remnants of an old social/game trail existed but it was seriously degraded and long closed off for safety reasons. The steep hillside and the unstable soil allowed the group to practice many principles of sustainable trail building. The trail still needs some finishing touches but residents of the neighborhood are already using it and giving the trail a thumbs-up.

The motto of the Trail Tamers is “Get Dirty, Build Trails and Have Fun!” They are currently seeking people to join them on their next mission to the Nature Conservancy’s 33,075-acre Davis Mountains Preserve. They will perform maintenance on the Madera Canyon and Tobe Canyon Trails which they built and which are very popular among hikers.  No experience necessary as training will be conducted for persons new to the business of trail work. The trip will run from 4/19/2020 to 4/25/2020 and the TT are seeking both trail builders and support staff for the event. For more information or to register, click here.

Urban Birding at Stormwater Ponds in Austin

As part of the Central Flyway, Texas will be the wintering home for over 90% of the ducks that use the this flyway1.  While a majority of the waterfowl, including the endangered Whooping Crane, will head for the Gulf Coast Wetlands, several species will make Austin their winter home.  Hornsby Bend is the most popular waterfowl viewing area in the Central Texas region, but I personally have a fond spot in my heart for bird watching in the lowly and regularly forgotten urban retention ponds.

Retention ponds, also known as detention or stormwater ponds, are build in urban areas to help reduce flooding during heavy rain events, reduce pollutant loads and allow for increased groundwater recharge in certain areas.  All new developments within cities in Texas have to build stormwater management systems, with the size and type of system defined by the local ecology/geology, city regulations and expected water issues.   Of the seven different types of stormwater management new developments can use, this article will center on “wet ponds,” which are permanent to semi-permanent pools of water.  Most of these features have the additional purpose of providing wildlife habitat for local animals and migrating birds2.  All wet or retention ponds within a city limit are inspected, and in the City of Austin there are more than 850 residential areas ponds and over 6300 privately maintained commercial area ponds3.  The City of Austin maintains a open data portal of all the retention ponds in the Austin and surrounding areas at

Now back to the birds. I have my favorite ponds that I like to visit, mainly because there is easy parking, plenty of wildlife to see and fairly easy access to good viewing spots.  I have visited each recently and hope you will also take a minute and stop by.  That is the best part of bird watching in retention ponds, you can just stop by for a few minutes and get some bird watching in as you run around doing chores!  Please forgive this north Austin bias – if you have a favorite retention pond in the South Austin area, please share.

Indian Mound Pond  (30.405635, -97.676654)

This two-pond system is on either side of Indian Mound and can be accessed by parking at either the Frank Fickett Scout Center or behind the Hilton Garden Inn Austin North.   In the past few days, the area has hosted a great blue egret, great white egret, and a mallard duck.   A number of turtles can also be seen regularly sunning on the rocks of the pond.  At one time, a family of beavers lived in the pond and made a dam out of the cattails but were removed several years ago.  Yellow crowned warblers, cedar waxwings and swamp sparrows can also be found in the trees behind the Scout Center during this time of year.   Around 2-4pm is not a good time to visit this pond, in that the local school uses the walking trail around it and most of the birds leave.

McCallen Pass Pond  (30.407139, -97.664741)

Parking for this pond is in the back of the Homewood Suites by Hilton Techridge off of Center Lake Drive.   There is also a new restaurant that has opened overlooking this pond on the other end of Center Lake Drive.  From the Homewood Suites parking area, you can walk along the berm for a better view but going all the way down the water’s edge is not advised.  Being a larger pond, this area annually gets a large number of water fowl including coots, double crested cormorants, ring neck ducks, and canvas back ducks.   Harris hawks are often on the power lines near this pond or flying over the nearly field.  Last week during one visit, I counted 39 ducks (mostly ring neck and canvas backs) and 18 coots around 1pm.  

Mopac Service Road Pond (30.384569, -97.734483)

To access this pond, park behind Mimi’s Café or the Firestone Complete Auto Care.  You can walk along the edge of the parking area, but going down the water’s edge is not advised.  Security vehicles or even the police (only once) will sometimes stop by to see what you are doing, but once you explain your intentions, they either go on about their way or hang out to learn about ducks for a bit.   At this pond I have found coots, northern shovelers, great blue herons, ring neck ducks and loons.  Usually there are around 10-20 waterfowl using this pond any given winter day.



Contributed by Jessica Snider, Class of 2014

White Christmas in Austin, Texas

Christmas in Austin came wrapped in fog this year.  Except for a trace of snow in 1939, weather records going back to the 1890s show Austin has never had a White Christmas.  So the combination of humid air, warm daytime temperatures and cool nights that shrouded the city in a gauzy whiteness is the closest we will get to a White Christmas. 
Fog is actually a cloud that touches the ground, formed when water vapor in the air condenses around microscopic dust, salt or other particles and changes into suspended water droplets or ice crystals.  But did you know there are seven different kinds of fog?

Radiation fog occurs as the ground releases thermal energy absorbed during the day into the cooling night-air causing water vapor in the air to condense.  It produces the fog that made Christmas spooky.

Advection fog is produced when warm moist air blows over a cool surface, usually water.  This process produces San Francisco’s famously foggy weather.

Upslope or hill fog occurs when winds blow warm moist air up a slope.  As the air expands adiabatically it cools and its moisture condenses. This process produces the spring and winter fogs on the Rocky and Appalachian Mountain ranges.

Freezing fog occurs when the water droplets in fog freezes and ices the surface of everything it touches.  It typically occurs at night; people wake up to a “Winter Wonderland.” Beautiful views but dangerous driving conditions!

Frozen fog is different from freezing fog.  Frozen fog occurs when the water droplets in fog are super-cooled below the liquid state and the ice crystals are suspended in the air.  You will need to go to northern Alaska to see this type of fog in the USA.

Steam fog or sea smoke occurs when cool air moves over water that is still warm from the summer.  Most often seen in fall and winter, another name for it is evaporation fog because water evaporates from the water body into the cooler air and condenses.

Valley fog occurs as air from higher elevations cools.  The air becomes denser as it cools and flows down a slope where it is trapped in lower elevations under a layer of lighter, warmer air.  Most common in fall and spring and densest in the early morning, this fog may last for days.

Information courtesy of the US Weather Service.

Audubon Society Christmas Bird Count

A popular Christmas Day tradition in the late 1800’s was the competitive “Side Hunt.”  The “side” of sport hunters that amassed the largest pile of dead birds at the end of the day won.  The conservation movement was young then but early conservationists and scientists were becoming concerned by the decline in bird populations as a result of the lucrative millinery trade and unrestricted hunting.

On Christmas Day, 1900, ornithologist Frank Chapman, an officer in the recently formed Audubon Society, proposed a new holiday tradition:  the Christmas Bird Census.  The first Christmas Bird Census was conducted by 27 birders at 25 different sites.  The birders counted 18,500 individuals from 89 species.   Last year’s Christmas Bird Count consisted of 79,425 volunteer birders at 2615 birding circles (sites) who observed 48,678,334 individual birds from 2638 species.  

Now in its 120th year, the Christmas Bird Count (CBC), is the longest running citizen-science project in North America.  A century of collected data helps researchers assess the long-term health and status of bird populations across North America.  This data, combined with other surveys such as the Breeding Bird Survey, shows changes in bird populations and provides a perspective for conservationists to use to identify environmental issues and propose strategies to protect birds, their habitat and their role in the larger ecosystem.

The annual CBC runs from December 14th through January 5th.  Birders of all levels are welcome and, as novice birders are partnered with experienced birders, the CBC is a good way to develop and improve birding skills.  It is not too late to join the 2020 Christmas Bird Count; ten Central Texas groups will conduct their CBC between now and January 5th.  

  • Balcones Canyonlands NWR (TXBC) | Monday, December 16, 2019
  • Westcave Preserve (TXWP) | Tuesday, December 17, 2019
  • Love Creek, Bandera County (TXLC) | Wednesday, December 18, 2019
  • Kerrville (TXKV) | Saturday, December 28, 2019
  • Lost Pines, Bastrop Area (TXLP) | Saturday, December 28, 2019
  • Round Rock (New Count) | Saturday, December 28, 2019
  • NewBraunfels (TXNB) | Sunday, December 29, 2019
  • West Kerr County (TXWK) | Monday, December 30, 2019
  • Bastrop-Buescher State Park (TXBB) | Wednesday, January 1, 2020
  • Burnet County (TXBN) | Friday, January 3, 2020

A list of CBC’s in other parts of Texas and additional  details of individual Central Texas CBCs including contact and registration information may be found here
VMS Category:  FR, Field Research

Caprock Mesas and Desert Canyons

The CAMN Field Trip to Twistflower Ranch

At the end of August, ten Master Naturalists from the Capital Area and Hill Country (Kerrville) Chapters fled the oppressive central Texas humidity and sought refuge and advanced training on the caprock mesas and in the desert canyons of Twistflower Ranch.  The ranch covers nearly six thousand acres on the far western edge of the Edwards Plateau ecoregion.

Mike McCloskey (CAMN class of 1998) and his family purchased the ranch near Iraan in 2000 as a retirement project with the twin goals of restoring habitat that had been overgrazed and creating a destination for urban dwellers to enjoy a remote nature experience.

Creosote and tarbush, while indigenous to desert ecologies, outcompete other plants and had come to dominate the landscape of the ranch.  To restore diversity and habitat, these abundant plants are being removed, allowing the seed bank of native grasses and forbs to germinate.  A wetlands area has been created in the depression of an old windmill.  This consistent source of water in the desert attracts wildlife; multiple generations of birds now know and visit this site.

Ben Skipper, PhD., professor of biology at Angelo State University, has been surveying the bird population at Twistflower Ranch for three years.  He showed the group how to set up mist nets to capture birds visiting the wetland.  A few Master Naturalists accompanied Dr. Skipper in the predawn hours to open the nets. We learned how to band, measure and document the birds that came to the nets.  Species included painted bunting, yellow-breasted chat, brown cowbirds, vermillion flycatcher, Bullock’s orioles, cardinals, pyrrhuloxia, and lark sparrows. 

After a hearty lunch in the main lodge, the group headed out to explore archeological sites with (Mike) Quigg, staff archeologist with the Gault School of Archeological Research.  He led us to large trash middens, grinding holes, hearths and the foundation stones of wickiups.  Quigg demonstrated how the hunters and gatherers who travelled the area in small groups identified and used the resources the land provides and how they prepared their food. The tour also included areas of more recent human activity:  the old ranch houses and out-buildings from the 1930’s.  

The following day, the group hiked to another part of the ranch to view a rock shelter with pictographs.  The pictographs have been dated to the same time as the rock art in the lower Pecos but the symbolism is different indicating that it may be a different group all-together. 

After full days of exploring and learning, evenings were spent on the porch enjoying nature’s light shows.  Friday night it was the stars and the Milky Way that are only visible when the skies are dark.  Saturday night it was an awe-inspiring thunder and lightning storm–the kind for which west Texas is famous.  

If you seek an opportunity to unplug and relax in beautiful accommodations, learn a lot and enjoy some amazing views you won’t want to miss this CAMN field trip the next time it comes around!  

Taking the Pulse of the Colorado River

At 8:00 a.m. on the first Saturday of every month, naturalists, birders, citizen scientists and river-lovers meet at the Hornsby Bend CER. From there, the group caravans to the set-in and take-out points of a selected portion of the 60-mile stretch of the Colorado River between Austin and Bastrop. For thirteen years this group of regular, occasional and new participants have surveyed the flora, fauna and flow of the river to evaluate and document the health of its ecosystem. Over the years, the group has seen the river change. They have identified and mitigated illegal dump sites, unauthorized draining from and discharging into the river, changes in the cut and deposition banks, and have seen native mussels, beavers and otters return to the river.

On July 6th, thirteen adventurers set out to conduct the 158th survey; they traveled an eight mile stretch of the Colorado River from Austin’s Colony to Little Webberville Park. They counted forty-one bird species and saw wildflowers, turtles, butterflies, damselflies and a coyote. They saw evidence of otter and beaver activity but did not see the critters. Maybe next time!

These surveys are conducted by the Austin – Bastrop River Corridor Partnership (ABRCP). This partnership was founded in 2003, understanding that growth would bring development and the demand for land, materials, housing and roadways would threaten the Colorado River. The ABRCP sought to protect the river and its natural and cultural resources through education, public outreach and collaboration to ensure sustainable development and a healthy riparian zone. The ABRCP was awarded the Community Stewardship Award for Raising Public Awareness by Envision Central Texas for its Vision Report titled “Discovering the Colorado.”  The report tells the tale of the Colorado River’s ecology and its history and describes both its current state and the desired future state. Read the report here.

Master Naturalists Abroad

(Or at least outside Austin!)

On April 22 (Earth Day, a super-holiday for conservationists), I had the chance to travel east to the Caddo Lakes region of Texas – nearly Louisiana – and meet up with some of the Texas Master Naturalists in the Cypress Basin Chapter. Their event – the 5th Annual Flotilla held in Uncertain, TX – raises money for their conservation efforts within the lake region, and consists of charity food sales, a silent auction, a scavenger hunt, and a chance to explore their work in maintaining the paddling trails in the lake and bayous surrounding it. I got to paddle around some of the extensive trails through the magical forest, try some local mayhaw jelly, and brought home a gorgeous coneflower grown by a member and sold at the auction for $7 – a bargain for a healthy, 5-gallon plant grown with Master Naturalist love and care.

Continue reading Master Naturalists Abroad

Lake Fail

Cars cruise in the sky from 183 to Mopac then brakes squeal as commuters try to make the turn for hamburgers. A train roars, its cargo creaking angrily as it disturbs a flock of red-winged blackbirds. A kestrel alights on a telephone wire with a mouse and begins to eat. The nearby pigeons look nervous. Gadwalls quack nervously. There’s a northern harrier lurking nearby, no cause for alarm but certainly says something about the neighborhood. A coot, seeing two humans armed with fishing poles makes for the middle of the pond. Err, lake. The big puddle I’m looking at through my binoculars at the northeast corner of 183 and Mopac is a lake. Lake Fail it’s called on ebird, and it’s my new favorite place to bird in Austin.

I can’t say what made this place come to be, but I am thankful it exists. There are no sidewalks around it save one at its end, but as I clutch my binoculars trying to spot the ruby crown of a kinglet, I realize that the concrete I stand upon was far more likely poured for the convenience of big mechanical earth movers that might need to dredge this place or bulldoze the impressive mass of vegetation at Lake Fail’s southern end. Another square of concrete on the east side of the pond gives us a pretty good view of the area. I have no idea this one concrete’s purpose, but use it to keep clear of fire ants as my friends count gadwalls and I scribble notes.

Lake Fail is a natural place hidden in plain sight. Seen by millions, known only by a select few: the couple fishing, a man grinning shirtless who waves at us, probably happy to see our binoculars point somewhere besides his torso. My wife Raquel and my good friend Tam are here as well, lured here because of promise of a canvasback. Personally I was hoping to see marsh wren that refused to come out into the open last time.

I can’t say who was more out of place in this forgotten pond, the birders, the sunbather, the fishermen, the ducks, but we all came here for more or less the same reason. We came seeking nature, be it the kiss of the sunshine, the nibble of a fish, or the song of bird. Often we plan these wild trips to Bastrop state park, The Guadalupe Mountains, The Grand Canton! But it’s not always that practical, especially with a three month old son. And besides, everyone knows birds can survive in those places, they’re out in nature after all. For me, there’s something special about the surprise of these forgotten places tucked in the corners of the urban sprawl. I relish the least grebes that live in the pond at the triangle, the yellow shafted northern flicker at Laguna Gloria, the ridiculous number of species at Hornsby Bend. I find these creature’s existence despite the rampant urbanization, resilient, brave, arrogant even. They’re here for the same reason I am, all those ‘natural’ places are just too far. More convenient to make do here in the city, in a backyard, a drainage ditch, a swath of forest that’s not worth developing. This is the nature that I am most familiar with, and the nature that surrounds most of us most of the time. It is a nature that, while often lacking the brilliant assortment of species in those Great Natural Places, still holds pleasant reminders that the natural world is not going anywhere. The population of creatures at Lake Fail is thriving because they are forgotten. They need no rules established to protect them, just to left alone.

I will to return to Lake Fail to do science, to study its humble coots and pied-bill grebes, its clandestine marsh wren and harrier. I want to see what sort of creatures survive here, if it’s a long term residence to them or if it serves the same purpose the area does for humans, just a flyover. I want data on the resilience of these birds and thanks to CAMN, I know how to get it for myself. And hey, this second best of all about studying this bizarre urban puddle (the first being the marsh wren) is once I’ve finished with my counts, a hamburger joint is on the other end of the parking lot.

Happy volunteering y’all! And no matter where you go outside, be it your backyard or Big Bend, don’t forget your binoculars.


Enhancing Rainwater for Native Plants on an Austin Preserve

Rainwater collection structure above Terry Town on BCP Vireo Preserve
Rainwater collection structure above Terry Town on BCP Vireo Preserve

Some people think I, as president, do nothing in CAMN but send emails and run some meetings. Today I offer a spot of proof to prove otherwise. I was photographed in the wild at a work session on Austin Water/Wildland Conservation Division’s Vireo Preserve at the completion of one of the last steps of finishing our rainwater collection system. This remote-canyon roof structure will help free volunteers from having to haul water a quarter-mile each week over narrow trails to a staging area known as “Terry Town” (after longtime Wildland volunteer, Terry Southwell—also from the CAMN class of 2013.) The water is used, mostly by Terry, to help get newly-planted native forbs, grasses and shrubs established. While the property does feature a spring that runs most of the year, volunteers take great pains to avoid disturbing its natural flow and the plants and wildlife that have become established around them.

img_6998Today we completed the pads for the pair of 150-gallon tanks, and attached gutters to the roof. The last remaining step in the all-volunteer construction project will involve running PVC pipes from the downspout to the first tank, adding overflows, and attaching spigots. Then, the process can be turned over to the whims of Central Texas weather. The roof, at 128 square feet, will collect enough water to fill the two tanks after 4 inches of rain.

For those interested in less-remote rainwater use systems, a good resource for Central Texas is at

And, if you’re interested in some of the fun projects Wildland Conservation and Austin Water dream up to help protect critical habitat for endangered species, and the water quality of our local segment of the Edwards Aquifer, please see Members of the public can sign up for guided hikes on protected preserves, or volunteer to help in a wide array of conservation efforts, from public outreach to land stewardship.

Honey Bee Swarms, and Other Stinging Insects

The European honey bee (Apis mellifera) may not be a species endemic to Central Texas, but there is no disputing the powerhouse role they play in pollinating our native flora and our agricultural crops. It’s no wonder seeing them in action is quite fascinating to many naturalists, be they curious adults or schoolchildren. As such, the Austin Nature and Science Center has long kept a demonstration hive just inside its main building where visitors can see the inner workings through its plexiglass walls.

Brandon Fehrenkamp, owner at Austin Bees, has been the manager of that hive for some time. Continue reading Honey Bee Swarms, and Other Stinging Insects