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Day 3: Watching the forest

Today we set up our first field experiment of the trip. We were presented with motion-activated camera traps and challenged to come up with a research question we wanted to investigate over the next five days. These camera traps would take photos whenever they detected movement, allowing us to look at animals when there aren’t any humans around. With these cameras, we were challenged to design a simple pilot study that we could carry out. We decided to look into the differences in biodiversity between areas with manmade trails and areas that hadn’t been disturbed. We had 14 camera traps, so we determined 7 different locations along trails and roads of different widths, and then decided to associate each trail camera with one deeper into the underbrush. By 9:45, we had designed our experiment and were ready to head out into the forest around Las Cuevas.

In the morning, we set up six of the cameras. It was a bit slow-going at first as we perfected the method, but by the end of the morning we were experts. We each took turns setting them up—I went third. It took some bushwhacking to set up the traps in the undisturbed areas, but that allowed us to see some impressive wildlife and trees. One of the earliest things we saw was a big cat scratch on the trail. Hopefully, with cameras nearby, we’ll be able to see some actual big cats by the end of the week. I also saw some massive leaves among the leaf litter, which I think belong to the Bigleaf Grape. We also saw the large, spiny outer shell of a seed pod of a palm tree as well as a bird of paradise plant.

Students head into a dense thicket in a single-file line.

Bushwhacking to place off-trail camera traps
A camera trap on a tree
A fully set up camera trap

After lunch, we did a different loop and placed the eight remaining cameras, including on the road leading to the research station. We were much more exposed in the afternoon, and as it grew hotter and hotter, I started to notice that my sweaty hands were partially erasing and smudging my field notebook. It’s a bit annoying, but now that I know about it I can mitigate the issue. It was also the first full day of field work, which was punishing but manageable. I’m staying hydrated and getting rest when I can and I think I’m managing it just fine.

The day isn’t quite over yet—this evening, I’m giving my topic lecture. I get to share what I learned about the biological history of the region. I got a preview of it today, when we saw trees adapted to fending off giant ground sloths, which are extinct now. I think it’ll go well. I’m interested to see what our cameras will pick up—I’ll be sure to update when we collect them again at the end of the week.

Protrusions with small thorns spaced out on the trunk of a tree.
These unusual thorns would have protected the tree from the now-extinct giant ground sloth.

Day 2: Monkeys, Ruins, and Angry Ants

“Toto, I’ve got a feeling we’re not in Kansas anymore.” Today, our group officially entered the jungle with a tour of the ruins of Caracol and a hike around Las Cuevas Research Station. While I encountered neither an amphibian nor an angelfish (I would have been really surprised to see that one), we saw many amazing species. While at Caracol, we observed a species of bird called Montezuma’s Oropendola. This species has a long tail with yellow feathers and builds pendulum-shaped nests. Our guide, Leo, noted that if the female Oropendola does not approve of a nest, she will push it to the ground and the male Oropendola will have to build another. We also observed several Howler monkeys (including a baby Howler monkey) and a Toucan from the road out of Caracol.

Caracol is a site of ancient Mayan ruins and we had the unique opportunity to climb the stairs to several large temples. I particularly enjoyed the view of the surrounding forest from the top. One of the structures we climbed remains the tallest building in Belize to this day. I learned a lot about Mayan culture and traditions, including their practice of playing ball games in large areas surrounded by rock walls, sometimes as a means of war.

View from top of Plaza
At the top of “Sky Palace”
View from top of “Sky Palace”
This tree is hundreds of years old!

After the tour of Caracol, our group arrived at Las Cuevas Research Station. We took a short hike around the area and observed several epiphytes and ant species. We discussed a bit about the mutualistic relationship between the bull-horned acacia and acacia ants after observing them on the trail. Acacia ants will fight anything that touches the acacia plant in exchange for food and shelter.

It was exciting to see these species in person after learning about them in biology classes in prior years.

We ended the day with dinner (pork, mashed potatoes, bread, and vegetables) and presentations. I am looking forward to exploring Las Cuevas more tomorrow with our first big project! I plan to wake up around 6 to bird watch before breakfast. That’s all for now!

LCRS Full Day 1 and First Big Project! (And, as always, ants!)

Day 1 at Las Cuevas (May 18)
Today was another great day here at Las Cuevas! We began our first big project for the class, and the prompt was to use motion-detection cameras in some way. We decided it would be best to use them to assess animal motion on man-made trails (disturbed area) versus undisturbed area. We settled on the research question: How does the presence of man-made trails influence the biodiversity of the vertebrate animals in the immediate vicinity surrounding the LCRS (Las Cuevas Research Station?)
We decided to set up cameras both on trails of all sizes (Small Mayan and Bird Tower Shortcut Trails, Intermediate Monkey Tail Trail, and along the overgrown San Pastore Road and the more maintained main access road) and for each camera set up on a trail, there was one ~50 steps into the woods to monitor undisturbed animal activity. My camera was set up in the woods near the Monkey Tail Trail, at N 16.73019, W 088.98109, in case you were interested.
It wouldn’t be my blog without this next part: the ants of today! The morning was fairly ant-less. There were ants, but I didn’t see anything too noteworthy. The afternoon, though, was quite fun. Early on (first 5 meters of the Bird Tower Shortcut Trail) we saw a leaf cutter ant pathway breaking up leaf litter. I thought it was cool how the leaf litter was broken up in their path, that shows often they walked it & how many there were. After that, we saw a leaf that had been cut up by a leaf cutter ant, which was really cool! Dr. Solomon shared that these ants have zinc-lined (really really hard) mandibles with which they clamp on to the edge of a leaf, vibrate (like a jigsaw,) and rotate their bodies to carve out a semi-circle shaped piece of leaf roughly the size of their bodies. In the image below, the size of the semi-circle gives the size of the ant! After a bit of time, I was bored while people were setting up their cameras, so I went and caught a leaf cutter ant with the pair of forceps (pictured below!) This was the first of what I assume will be many ants caught this week. After that, I found a Pseudomyrmex family ant on a flower. I was initially puzzled because this was a less likely species to see, but when I realized the large silvery eyes, I could tell it was a Pseudomyrmex. If I had to guess specific species, I would guess Pseudomyrmex gracilis. That’s all I got ant-wise for today.
What a great day, and I can’t wait for the adventure tomorrow will bring!
Images:
Defined ant path in leaf litter
Leaf cut up by Leafcutter ants
Me holding the leafcutter ant I grabbed with forceps
Image of Pseudomyrmex ant found on flower. Apologies for poor quality.

Day 2: Exploring the Maya ruins

Today was primarily about the Maya ruins of Caracol. We left Crystal Paradise Ecolodge after a delicious breakfast and immediately headed for the Chiquibul National Park, one of the oldest in Central America. Along the way, we passed the the Mountain Pine Ridge, where the typical deciduous canopy gave way to pine trees due to the differences in the composition of the soil. The checkpoints are there to reduce the impact of illegal logging. We learned that logging was super restricted in Belize, including thst the country as a rule does not export timber, only finished products, in order to reduce demand. Interesting to see how the nation is trying to protect its historic forests. At one of the checkpoints on the way to Caracol, I saw a cashew tree for the first time. They’re quite odd looking—I never would have expected cashews to grow at the base of a whole fruit. It’s strange to see—I’ve included a picture here because I almost didn’t believe it myself.

Cashew fruit on the ground
Cashew fruit

The big ticket item of the day was Caracol itself. It’s an ancient Maya city, mostly buried. The parts that are excavated are quite impressive—temple complexes, ball courts, and residences. The main palace is still the tallest structure in Belize! Our guide told us that, because of their animistic beliefs, when the Maya stopped using a building they buried it and built the next one on top, and that’s why Maya buildings are on such tall mounds. We saw many of these mounds and buildings, including a whole astronomy complex which was oriented so that it different buildings tracked the sun as the seasons changed. It was all fascinating history, and a history I haven’t learned much about in the past.

An ancient Maya temple viewed from high up.
The view from atop Caana
I stand at the base of a giant Ceiba tree
The Ceiba tree, which has cultural significance to the Maya.

I was focused primarily on the trees we saw, though. On the drive, we got to see a number of Trumpet trees, particularly in the disturbed areas by the roadside. At Caracol, there were also these two magnificent Ceiba trees. They were so close together, which was surprising, considering normally their canopies spread out quite a bit. You could actually see the canopies avoiding eachother. We also saw an avacado tree (although the fruits were not ripe) and an interesting parasitic relationship between a Cohune palm and a strangling fig epiphyte, which would eventually kill it. There were tons of other interesting plants and trees as well, like agave, the tourist tree, bay cedar, and more. In addition to the trees, we got to see grey foxes, howler monkeys, and a toucan! 

Around 4 PM, we finally got to Las Cuevas. Our encounters with Maya ruins weren’t over, though: Las Cuevas is also built on an unexcavated Maya ruin, and many of the ‘hills’ around the place are Maya structures. We went on a preliminary hike through the Maya ruins around Las Cuevas and saw another ball court and temple complex built atop the caves.   This site was apparently more likely a pilgrimage site than a permanent settlement, we were told. We ended the day with another round of presentations and settled into our rooms at Las Cuevas. I can’t wait for tomorrow—so far we’ve just been doing travel and getting set up, but next we’re going to get to start doing research.

(Final note—we have limited wifi, so although I’m writing these daily, some, like this one, will be posted later. Sorry for the delay!)

Belize Day 2: Epiphytes and Flights of Stairs

Hi guys! Today felt like 3 crazy, wonderful days in one. Beginning with a nice 5:30 am shower, the day was filled with bird and critter identification and a stair-master tour of the Mayan mounds dotting the rainforest. 

(Caracol Ruins – 05/17/25)

After breakfast, we hopped aboard our iconic bus and took cat naps as we chugged up the mountains to the Caracol Maya Ruins. On our route, we passed through an area of the mountains known as Mountain Pine Ridge, featuring pine evergreen trees that were not very rainforesty. Our guide explained to us that this seemingly out-of-place pine vegetation was due to the fact that the soils in this region were different, composed of reddish (from the iron within) granite soils. We drove right through a ghost town that once flourished with the logging industry but has since been abandoned due to Belizean regulations shutting down the export of timber (though the export of timber products like furniture is legal). In the same area, baby pines had been planted as part of reforestation efforts. Human abandonment of the area allowed for pine restoration. It really makes you think about human/natural ecosystem competition. In this case, it was either the humans or the pines, not both. Is there a way they can coexist sustainably without edging each other out? 

Later down the road, we passed a beautiful, but squashed bright green vine snake in the middle of the road :(. Everyone disembarked to marvel at the pretty but gutty creature. Right when we got back on the bus, Sam coincidentally pulled out a green gummy worm and started munching on it. 

(Sam’s snake – 05/17/25)

A little while later, we arrived at Caracol, a site of Mayan ruins. We learned that the Maya built their houses and buildings on mounds of soil that contained previously used buildings – sometimes with deceased loved ones inside. They hopped on the “build up, not out” concept way early on. In fact, their tallest mound had 11 other layers of structures buried underneath. Boy, was that a climb. We climbed the stairs on this massive mound to reach the top, and by the end, we were on our hands and knees crawling up. From the top, we could see Guatemala in the horizon. Also, there were stray pieces of ancient pottery dotting the ruins, and we can all now say that we touched pieces of ancient Mayan pottery – pretty neat I think. 

(TALL Mounds – 05/17/25)

Throughout the day, I’ve seen so many of my glorious epiphytes (my taxa group, the dudes that live on trees without parasitizing them) and have been to successfully identify quite a few of them with the help my handy dandy taxon ID sheet and INaturalist (in the rare case that we have internet). We also saw a strangler fig, which is super neat because it begins its life cycle as a harmless epiphyte high up in a host tree, benefitting from the direct sunlight, but then, it grows down and around its host tree to establish its roots in the soil and strangle its host to death, taking over the space. I also was able to identify beautiful arrowhead plants with bright red fruits and winged peperomia from the pepper family, both quirky, unique epiphytes. 

(Epiphyte Friend – 05/17/25)

Amongst the epiphytes in the tree canopy (the highest part of the tree), we spotted quite a few beautifully patterned birds with some interesting behaviors. In the morning, we saw a social flycatcher with a long, bright-yellow tail, and at the ruins, we admired the hanging, bag-like nests of the Montezuma oropendola. These guys create hanging nests that serve as extra protection for their young and from nest parasitism by cowbirds. Nest parasitism happens when unrelated birds lay their eggs in the nests of different birds, forcing the nest owners to raise and nourish young that are not their own. On our way out of the ruins, we watched a toucan hop from leaf to leaf and a turkey vulture scouting the area for fresh meat. 

We are now established in our final rainforest site, the Las Cuevas Research Station, which is also built upon Mayan ruins and a cave system. Also, there are epiphytes of all shapes and colors EVERYWHERE that I’m dying to identify over the course of these next few days. I have a few more bucket list items for these next few days: (1) go birdwatching, (2) explore the underground cave system, (3) see a Scarlet Macaw (the beautiful, iconic red parrot).

Today I’ve learned SO MUCH about Belize’s history, geology, and some of the plant and critter behaviors that make up ecology. 

I’m ending my Blog today with these lovely and super true quotes from Dr. Evans: “The more you know, the more you notice” and “the longer you stare at it, the more things you see.”

  • Lily 🙂

Day 2: Life under the sun!

Today we drove for a few hours through a pine ridge ecosystem into the Chiquibil National Forest! We stopped at Caracol, Maya ruins deep in the rainforest 3/4 of the way through our drive where we learned about Maya civilizations. We walked around the large site seeing bases of what used to be homes and temples in a sprawling city from 200-1200 CE/AD. There were huge palm trees with parasitic fig trees suffocating them and some very fragrant wild cilantro plants. I saw a small brown anole on one of the trees in the middle of one of the family housing areas. It was about 6ft up the trunk of the tree.

(Brown anole)

The largest ruin was in a wide expanse of sunny fields. It is the tallest structure in Belize, and we climbed all the way to the top! At the top we could see miles upon miles of mountains. Archaeologists suspect was the home of a local king, and at the top of the ruin was a temple to the sun god. We spent a good amount of time exploring the ruin, and though I was sweating through every layer of clothes, I loved every moment. I also saw a small brown lizard on the outside of the sun temple. Before we left the site, we saw a baby grey fox in the rubble of a partially excavated ruin.

(the view from the top of the tallest ruin)

(Rose bellied lizard)

We continued our day by driving to Las Cuevas Research Station, our home for the next few days. The jungle got consistently denser the further we drove; we even saw a toucan and some howler monkeys on a tree on the side of the road.

At Las Cuevas we took a short walk through the rainforest where I saw a blue tailed skink in the hole of a tree. Now we have started wearing boots anytime we go outside of the research station fields just in case we come across any venomous snakes. Hopefully we see some but not too close.

All in all, today was a super fun day and I successfully ended our sunniest day of the week without a sunburn!

See you later!

Claire C

Caracol and LCRS Night 1!

May 17 – First Full Day, CPE —> LCRS Travel Day, Caracol Visit, and Inaugural Hike
Hello! Today was yet another great day here in Belize. When we woke up, we were met with a lovely breakfast from the Crystal Paradise Ecolodge before we hopped in the van for a ride to the Caracol Maya Ruins. Caracol was one of their larger cities, with a 5 mile radius of the site, 35,000 structures, and an estimated population of 200,000! Visiting the site and seeing the ruins, along with the beautiful Cotton Trees (pictured below with large above-surface root systems called Buttress Roots) was so awesome!
In addition to the ruins of Caracol, we arrived at Las Cuevas Research Station (our home for the next week) and had our inaugural hike! This was a short hike along the Mayan Trail, where there was no shortage of diverse ants! I saw some stray ants on leaves and the ground, but the real excitement came early on: we saw army ants! They were marching along the path, and marching back the other direction with objects they to bring back to their bivouac, a temporary colony home (as opposed to a traditional ant colony) that is in place for only one reproductive cycle. After the cycle, the entire colony will move to a new place with new forage-ables. When we moved on, after a lull in ant-spotting, we came upon a Bull’s Horn Acacia tree. I know what you’re thinking: what does a tree matter to the ant man? Well, this tree has a secret (unless you disturb it, then it is not a secret.) The tree is protected by ants through a symbiotic relationship! The tree provides shelter in its hollow thorns to the colony, while also providing both carbohydrates and protein, making a full meal. The ants never have to leave! Their rent? Protection. If someone even messes with the tree, the ants will attack that individual (person, animal, rock maybe?) So, for just a 30 minute jaunt in the woods, there was a pretty great amount of ant-stuff to see!
Images:
Cotton Tree
Caracol Ruins
Bull’s Horn Acaciaarmy ants,
Maya Trail Sign
Army ants marching

Off the grid!

We have finally arrived at Las Cuevas! Before getting here, I was obviously aware that I was going to be in the rainforest, but it just hit me that I am IN THE RAINFOREST. The drive through the forest seemed to go on forever as we got deeper and deeper. We saw a toucan and howler monkeys along the way, which I have only ever seen in zoos, so it was so beautiful to see them in their natural habitat. The research station is something out of Tarzan! I feel so off the grid because we only have about 6 hours of internet access a day, no AC, and limited electricity! Time to test how strong my Instagram addiction is.

It’s day 2 and I have yet to see a butterfly up close— but I am holding out hope! Serenity has seen quite a few, and she showed me a picture of one that she found. I identified it as an Erato heliconian. I am glad that I was able to ID my first Lepidoptera. Today, I also gave my Lepidoptera Taxon briefing, which I think went well. I was able to answer all the questions, and everyone was so nice. Tomorrow is our first day really in the field, so I am excited to find a few on our explorations!

Last year, I took a class that covered the natural history of Maya forests, and I loved it! So i have been looking forward to seeing the Maya ruins and forests, which we saw today. The stairs at the ruins were BRUTAL; I definitely got in my leg workout today. But, it was so worth it! The views were incredible and it felt like truly a once in a lifetime experience. Our local guide, Leo seemed to know so much about the ruins and the history. After reading about these civilizations for so long, it was incredible to see them in real life!

Transitioning to the Trees: Our First Day in Belize!

Hey yall, Sadhana here! Today marks a long transition day into activity in Belize. We started off meeting at 6 am on Rice campus. Realizing I wouldn’t wake up in time, I ended up pulling an all-nighter, which definitely made lugging my suitcases from my apartment to campus all the more exhausting. We packed in a sleeping bag and I got this really cute Nixon camera as well! We then headed to IAH, took a minute to check in our luggage, and completed the classic Customs and Immigrations rundowns. And lo and behold, we were in Belize!

At Belize’s Customs and Immigration port before officially entering the country!

Unfortunately, there was not a lot of fungi out and about. However, I did spot some lichen on trees when we arrived at the Crystal Paradise Ecolodge around 5:30 pm! These were light green in color and appeared somewhat leaflike, which made me think it could be one of the classic Powdery Medallion species. This was really cool because the species were growing on the bark of some other trees, and definitely could have been attributed to being moss or something else. It does take close observation to see the growth patterns though, which makes it even more worthwhile. The Powdery Medallion belongs to the Dirinaria genus, and Belize is known for having the applanata and picta species within this group, oftentimes coalescing to take on a given bark. The mint-green to grey color appeared to be more consistent with the applanata. But it could have been both lichen—only DNA testing could tell.

The Dirinaria lichen in Crystal Paradise Ecolodge covering the entirety of a slender branch in foliose growth patterns.

We also saw a lot of leafcutter ants in the Ecolodge, scurrying in neat, orderly lines to drop their prized leaf possessions around 6:30 pm, when taking a walk to the nearby river. Leafcutter ants cultivate fungal gardens as a method of digesting the plant material in the leaves. These complex gardens require a lot of symbiosis between the ants and fungi, with specific ants corresponding to specific fungi in this process. While I couldn’t identify the ants due to how quickly they moved, I will hopefully get better at that, potentially pinpointing the associated species from there. 

Overall, today’s trip was really worthwhile! It was a super hectic day, and though there wasn’t much of my taxon around, we spotted a nest of these fine, white eggs, enshrined in feathers by a nearby river. We also saw two iguanas! They really camouflaged well into the trees until all of a sudden they would jump into the river and you would hear a large plop! Were they scared of us? Did they just want to cool down (I know I certainly did)? But better luck tomorrow, I’ll be on the hunt!

P.S. some other cool things we saw!

(top) A series of eggs we found at the Cheers! restaurant around 3pm, right after getting out of the airport. (bottom) A cute little toad with green and yell striations, and warts on its back. Elise and I found it on a late night walk (~9pm) in Crystal Paradise Ecolodge.

Birdwatching Among the Ruins

Zoe Gupton

May 17,2025

Day 2

Today’s adventure started at the Mayan reserve, where I was on the lookout for birds, my assigned organismal group. The highlight was definitely the Montezuma oropendola. It’s a medium-sized bird with a striking yellow tail and a strange, almost gurgling call. We spotted their hanging nests high up in the trees—long, woven pouches dangling like ornaments. I didn’t see the oropendolas doing much besides perching and calling, but their nests were enough to impress me.

I also saw a tiny gray bird with a bright white streak above its eyes. It moved fast and kept low in the undergrowth, so I didn’t get a good ID, but I’ll keep trying to narrow it down—possibly a species in the flycatcher family. It seemed to be foraging solo, darting quickly from branch to branch.

On the way back, the group got a quick look at a toucan, though I only caught it as it flew away. I’m hoping for a clearer view at Las Cuevas. Speaking of which—there, I spotted a turkey wandering through the station grounds. Not the most exotic bird we’ve seen, but still fun to note.

Looking forward to more bird sightings tomorrow!