NIGHTS OF THE SPRING PEEPERS

Spring Peeper, Pseudacris crucifer, male peeping during spring mating season

Spring is nature’s most joyous time to be a naturalist in northern latitudes as the world awakens from its long winter sleep. Near our Michigan home, Amish farmers are out in early March, when they begin to collect Sugar Maple sap from the awakening trees, and they use horse-drawn plows to prepare the earth for planting. Wave after wave of birds arrive from the southland, from Sandhill Cranes to Baltimore Orioles and hundreds more. The land awakens with spring wildflowers before the trees leaf out. The first insects appear, including Mourning Cloak butterflies that have overwintered under bark or leaves, and the Common Green Darner that has migrated up from the south. These are all great stories for a naturalist, but there is also a chorus that, to me, signifies that spring is here.

Video of Spring Peeper calling next to the pond

When night time air temperature rises into the range of about 35 to 40 degrees Fahrenheit, each little pool in the forest comes alive with the songs of Northern Spring Peepers. These tiny chorus frogs, each about the size of a thumbnail, peep together around the shores of a permanent or temporary pond–one that has no fish as predators. These are all male frogs trying fervently to attract mates. The calls begin shortly after sunset and end in the early morning hours, before the first traces of dawn light bring predators in the form of birds to the ponds.

Where I live in the middle of Michigan’s mitten, there are numerous little glacial kettle ponds, left as chunks of ice by the last ice age. When the ice melted, it left a depression filled with water, with high banks surrounding the new pond. These ponds are too small to support fish but are just right for Midland Painted Turtles, Common Eastern Toads, and Northern Spring Peepers. I set out on two nights to figure out how to see and photograph the peepers and I chose a pond that I could have easy access to. On the first night, the peepers were calling loudly when my nephew and I slip-slided down the steep hill leading down to the kettle lake. The frogs heard us coming and immediately became deathly quiet. We patiently waited without moving, and the peeps gradually slipped from stealth mode and awakened the heavens again with joyous noise. I spent a long time looking for the source of the calls, and finally found one little peeper calling from under the overhang of a fallen oak leaf right next to the pond. I was only able to get one photograph with a macro lens, a large bulky lens next to these tiny creatures. It was the opposite of stealth.

The setting: a small glacial kettle pond in the forest

Two nights later, I returned to the same pond, this time with my wife, Karen, and with the plan of using a snout wide-angle macro lens, which is about 18” long and only 5/8” in diameter at the lens end, which meant my face could be farther away from the peepers and I could approach them with stealth and cunning, or at least my version of stealth and cunning, which is usually clumsy and loud. 

We were quieter in approaching the pond than on my previous expedition, so the peeps barely interrupted their chorus of desire upon our approach, despite our use of bright flashlights. I showed Karen where I expected to see the frogs based upon my previous night’s work, but that proved to be fruitless, or frogless. In searching around a patch of shoreline where a peeper was loudly calling, we just couldn’t find it on the forest floor. But then I happened to see movement about 18” off the ground, and it was a Spring Peeper calling while clinging to the dry stalk of a wild perennial left over from last fall. Its little vocal sac was expanding with each call–so incredibly exciting to see in real life!

Spring Peeper male calling using air sac at throat [photo shows how sac expands]

Spring Peeper male vocalizing from its perch on an oak leaf

So I set up my snout lens on a tripod and approached to within about an inch of the calling frog. Meanwhile, Karen used a dive light–a powerful LED flashlight meant for deep dives in the ocean–to light the frog. Somehow, it didn’t mind the light too much and I was able to get hundreds of close-up photographs and videos of this frog and two of its nearby rivals in some of the most exciting hours I’ve ever spent (and, yes, I am truly a boring person). If you ever have the chance to experience the sounds of Spring Peepers while standing among them, don’t miss the opportunity!

MORE DETAILS ABOUT THE LIVES OF SPRING PEEPERS 

The Spring Peepers calling in a chorus around a pond are all males, trying desperately to attract mates. Presumably the biggest and loudest male wins the wooing contest, allowing them to mate with the quiet and choosy females. After mating, the female lays eggs in the little pond. Tadpoles are the hoped-for result, and the cycle of life continues.

Spring Peepers are the color of leaf litter on the forest floor: tan or brown or green. Hence they can remain disguised. The second word of their scientific name, Pseudacris crucifer, refers to the large dark cross on the back of each frog. I believe this is part of the camouflage, which breaks up the otherwise uniform color and looks like the veins of a leaf.

A Spring Peeper looks a bit like a dried leaf on the forest floor; the cross marking on the back and other markings on the legs break up the color, making it look more like fallen leaves

These are tiny creatures. In fact, were you so inclined, you could mail seven of them in a one ounce first-class mail envelope, though the USPS and peeps wouldn’t be very happy.

Spring Peepers are tiny in comparison with the loudness of their group

Peepers go into suspended animation all winter, spending the long, cold months hiding behind a flap of bark on a tree or under a fallen log or under the leaf litter on the ground. Their bodies can survive freezing down to about a 17 degree Fahrenheit body temperature because of glucose and other chemicals in the blood that act as antifreeze.

To get these pictures, I used a long Laowa Macro Probe lens with a strong dive light

To make their calls, the males take air into their lungs, then close off their nostrils and mouths. As air is forced from the lungs by muscles, it passes over vocal cords and into the inflated air sac, creating the sound variously described as peeping, chirping, or sleigh bells. The sound is loud enough to prevent sleeping for some people, and is a shimmering shower of sound when it surrounds us next to a pond.

The slightly bulbous toe pads are designed to stick to wet or dry vegetation to facilitate climbing

Just to the right of this calling Peeper is the warty leg of a much larger Eastern American Toad

A typical male peeper can make up to 13,500 calls per night, though I didn’t do the math and am depending upon scientists for this factoid.

And the most astounding fact of all: a group of Spring Peepers around a pond is referred to an an “army.” A noisy and tiny army, but an army nonetheless.

Video of the calling Spring Peeper right next to the Toad

The photographs below include other inhabitants of this pond: an Eastern American Toad showing off the gold flecks in his eye; Midland Painted Turtles basking on logs; a few more Spring Peepers; and a view of tree reflections on part of the pond. Click on each to make it larger.

BIG ISLAND OF HAWAII: Virgin Snorkelers at Kapoho Tide Pools

Karen Rentz and our friend floating over the Kapoho coral reef

Our lives have moments of pure awakening, when we experience a place (or a new idea or fresh music or a great book) for the first time. That was our experience snorkeling in the Kapoho Tide Pools, a wonderful coral reef south of Hilo.

Dappled by sunlight, the coral reef casts its reflections up on the surface

Snorkeling was entirely new to us. The idea of safely breathing underwater while encountering strange creatures was so alien that we wondered if we could even do it. A variety of relatives and friends had tried it and had trouble with trying to breathe and swim underwater at the same time. We were apprehensive, but how can you go to Hawaii and not even try? On the other hand, we didn’t try surfing, the other great Hawaiian form of water play.

We started by visiting a dive shop, and getting lots of advice on masks and snorkels. After purchasing our first masks and snorkels (from an online source, without fitting the masks first–a big mistake!), we visited our local high school swimming pool during free swim hours, and learned how to breathe through a snorkel, knowing that a life guard might be able to save us if we inhaled water instead of air. I took the risky step of investigating–then purchasing–a truly expensive underwater camera housing so that I could potentially take some coral reef photographs. That step forced me to make it a success!

For snorkeling wear, we each obtained a shorty wetsuit, which covers the torso and thighs and upper arms, and gives some warmth in cool seas. In May in Hawaii, it proved to be just right, though on land I felt like I had been stuffed into a casing like a sausage. We also wore neoprene caps to keep our heads warm and out of the sun. Finally, we wore neoprene booties to prevent the abrasion of the upper foot surfaces that flippers can cause. After all these purchases, we read that two Washington State snorkelers had just drowned while trying this new activity off the Hawaiian coast. Oh oh …

We flew to Hawaii, then drove around the island to visit some old friends who are now living on old lava flows south of Hilo. They had agreed to host our first few days in Hawaii, and to teach us how to snorkel in a place that has the reputation of being among the best snorkeling places on the Big Island. First they took us to a small cove along the coast that features water heated by volcanic activity. It was like snorkeling in bathwater, and was a shallow and forgiving place to try the basic techniques. There were even a few coral reef fish enjoying the water with us.

After graduating from the kiddie pool, we went with our friends to the Kapoho Tide Pools, which is actually a narrow and small bay that provides a relatively protected coral reef experience. We walked a short trail to a public access point, then donned our flippers and masks, and apprehensively floated off into the bay from a lava shelf.

My beautiful legs at the edge of the Kapoho Tide Pools; this small cove is bordered by cottages and a community park where visitors can enter the sea

We immediately experienced magic, with bright yellow Raccoon Butterflyfish and vivid lavender Blue Rice Coral and a hundred other creatures. The crystalline aqua waters revealed the promised new world to us, and it was even more wonderful than we could have imagined!

On our first day at Kapoho we gradually grew more confident about snorkeling, learning to expel water from a mask, clear a snorkel that had taken on water, and deal with leg cramps from flippers that were too long. Eventually we grew physically tired and hauled ourselves out for the day–wonderfully satisfied with what we had seen and learned.

We each used a camera underwater to try and capture the magic

We returned the next day, enthused about seeing the place again. This time we had more challenges: we ventured out to where waves were roiling the reef, and found out that swimming and photographing under wavy conditions was more difficult than it had been in the bay’s more protected areas. Karen got a little seasick while trying to photograph where waves were tossing us around, and I was shoved by a wave into some coral, which left a coral-shaped bloody pattern on my knees and lower legs. Fortunately there weren’t any sharks nearby! We also found that saltwater tastes really salty, after ingesting too many mouthfuls.

A school of Raccoon Butterflyfish in the aqua waters, watching us get our snorkeling lessons

Vivid purple of the Blue Rice Coral, a species found only in Hawaii and becoming rare

The corals are incised with dark lines; these are the recesses where Petroglyph Shrimp live

Slate Pencil Urchin, with its fat reddish-orange spines, lives among the corals and other species of sea urchins

Ringtail Surgeonfish were one of approximately 35 species of fish we saw in this reef habitat

We were finally tired after two hours in the waves, and swam back to haul ourselves out. When I looked down at my legs, I realized that the backs of my Seattle-white legs were suddenly vivid pink.  As were Karen’s. Not good. We had forgotten to apply sunscreen, and hadn’t realized that we could get such an intense burn while snorkeling. Unfortunately, these burns were painful for Karen the rest of the trip, and she used a great deal of aloe vera to alleviate the pain and heal the skin. Live and learn.

We came away from our two snorkeling trips to the Kapoho Tide Pools newly aware of the wonderful world of the coral reefs. Sure, we had visited such reefs vicariously on television, but nothing can compare to actual experience. We learned new skills, and came away enthralled by a place of transcendence that we shall never forget.

When we swam to the mouth of the cove, the waves became more powerful and it was easier to lose sight of one another

I used a fisheye lens in this fisheye kind of place; this proved wonderful for showing the expanse of coral reef, often including reflections and the sky, as in this photograph of Karen

I even did a self-portrait with the fisheye lens, in which I come out looking a lot like a fish

I did a bit of what is called “over-under” photography here, simultaneously revealing the surface and underwater scenes

A fat sea cucumber and a Saddle Wrasse add color to the reef

Ringtail Surgeonfish and reef reflections up to the surface

Yellowfin Goatfish rest the day away in sandy alcoves among the coral, then feed at night

I found the surface reflections of the shallow reef endlessly fascinating; these are best where the reef is topped by shallow water, as it is here

I haven’t figured out what caused all these bubbles floating in front of the lens

With small waves and a bright sun overhead, the surface casts this network of sunlit wave patterns on the floor of the reef

Convict Tangs are named for their prison-issue uniforms

For those who haven’t tried it: snorkeling involves a mouthpiece attached to a hollow plastic tube that goes above the water. The nose is stuck inside the face mask, and isn’t used for what God intended it to be used for. Snorkelers become mouth breathers.

Karen and Alice gliding through a liquid passage between sky and earth

Lined and Threadfin Butterflyfish above a sandy spot in the reef

Raccoon Butterflyfish were approachable, often coming within inches of my lens

Rice corals remind me of some of the shelf fungi that grow on trees–but on a much bigger scale

Who knows what we’ll next find as we swim the length of the reef?

We used an excellent ebook snorkeling guide for advice on snorkeling hotspots. The Big Island Hawaii Snorkeling Guide is available at Tropical Snorkeling.

To see my web site, which includes photographic prints for sale, please go to LeeRentz.com (just ask me to email you a small version of a particular photograph you like if you can’t find it on the site; my website is not up to date). 

To see thousands of my photographs in large file sizes for use in magazines or other printed materials or electronic media, go to my PhotoShelter Website.