Category: amphibians

Spot the toads!

June 13, 2026 • 8:15 am

Today we have another “spot the” feature from Robert Lang, whose commentary is indented below.  Spot the two frogs! There will be a reveal at 11 a.m. Chicago time.

The last two days on early-morning hikes, I’ve encountered literally dozens of tiny frogs hopping across the trail—so many that I had to watch my step to avoid them. Fortunately, on the light, sandy trail, they stand out pretty well, but once they get into the leaf litter on either side, they practically vanish. Today I brought my phone-camera on the hike, which means that it’s time for yet another “Spot the Froggies!”

My previous “Spot the Froggies” were California Tree Frogs (Pseudacris cadaverina), whose gray color made for perfect camouflage against streambed granite. I think these might be California Toads (Anaxyrus boreas halophilus)—I’ve seen full-size adults of the latter in this area, and I think I make out the beginnings of the white stripe running down the back of these subadults. I invite firm IDs from our herpetological expert fellow readers. These were taken along the Arroyo Seco, above JPL [Jet Propulsion Laboratory] in Pasadena.

Here’s the “Spot-the” photo; there are two frogs in the picture (though it wouldn’t surprise me if there were more that I overlooked). Also attached is a close-up of one on my hand. (That’s his left leg extended, not a tadpole tail.)

Click to enlarge (I rate this “fairly easy”).  Please don’t reveal where they are in the comments, but you’re welcome to tell us if you found them, and how many you saw.

Again, reveal at 11 a.m. Chicago time.

Spot the tree frogs!

May 27, 2026 • 7:30 am

It’s been a long time since we’ve had a “spot the. . . ” challenge, but Robert Lang submitted one. His caption, indented below, tells you that there are three frogs in the photo. Can you spot them all? There will be a reveal at 11:30 a.m.  Robert wrote this:

It’s been a while since you’ve had a “Spot the…” photo, and I think this one qualifies. Here we’re looking for California Tree Frogs (Pseudacris cadaverina). The first one is obvious. The challenge is to spot the other two (total of three). This was taken in the Arroyo Seco in Southern California, on the way up the creek bed to Royal Falls.

Of course you must click the photo to enlarge it for starting your search.  PLEASE DO NOT GIVE THE ANSWER IN THE COMMENTS so that everyone can have a go without pointers.

 

Readers’ wildlife photos

May 17, 2026 • 8:15 am

Send in your wildlife photos! I am almost out. Thank you in advance.

Today we have miscellaneous photos from the Catskills taken by reader Jan Malik. Jan’s captions and IDs are indented, and you can enlarge them by clicking on them.

Here is another batch of pictures from my hikes in the Central Catskills this April and May. They are not too artistic, given the fast pace that a weekend backpacking hike demands, but they give a sample of what common animals a casual hiker can see in these “mountains” (the Catskills are an eroded plateau and, despite being steep in places, they are too low to have an alpine zone).

White‑tailed deer (Odocoileus virginianus), right in the parking lot at a cloudy sunrise. It was slurping water from a muddy puddle despite a clear stream flowing nearby, so it must have been leftover salt that attracted this ungulate. Woodstock residents like their roads well salted. One has to drive carefully at dusk around Woodstock, as there are many deer browsing on lawns and gardens.

In the woodland, I found the first of many red efts of the Eastern newt (Notophthalmus viridescens). This is an intermediate land stage of development between the aquatic larva and adult forms. Red efts have lungs, but air exchange through the skin is also important, supplying 30–40% of their oxygen demand. They travel through the forest litter when it is humid enough—after rain or in the early morning:

This is probably a blue‑headed vireo (Vireo solitarius), collecting nesting materials. If my identification is correct, then it is not possible to tell a male from a female, as they are sexually monomorphic and share rearing duties almost equally. Interestingly, however, a female may desert the nest just before fledging to mate with another available male:

Possibly an Eastern comma (Polygonia comma), found at higher elevation:

Black‑and‑white warbler (Mniotilta varia). I think this is a male. If so, he may be led by a female into the territory of another male to provoke a fight and allow her to judge his fitness. These birds occupy a similar niche to nuthatches and brown creepers; they climb and circle tree trunks to find arthropods:

Eastern towhee (Pipilo erythrophthalmus), male. These colorful sparrows hang around the edges of forest clearings:

Eastern American toad (Anaxyrus americanus americanus), hiding in a ramps patch. I wonder whether they would prey on red efts or if the efts’ foul taste would be a deterrent:

While passing through oak woods rich with acorns, I heard many alarm chirps from Eastern chipmunks (Tamias striatus). Most made themselves scarce as I approached, but one remained on guard duty:

Not a good picture, but here is a dark‑eyed junco (Junco hyemalis). These are hardy birds, staying year‑round in the forest. In winter they form close‑knit flocks with a few dominant individuals and a strict pecking order:

Chipping sparrow (Spizella passerina) on the side of a quiet road. These migrate to more southern states in winter and in summer nest closer to human settlements:

Mourning cloak (Nymphalis antiopa). There were a couple of them in the area, continuously jousting in the air for control of the territory. I see them every spring in that exact spot, but this year they were too engaged in battling each other to stay still, so this is a picture taken a few years back:

Brown creeper (Certhia americana), shown here just a moment after eating a couple of mayflies. They are common enough, but I rarely see them due to their near‑perfect camouflage. Without directly comparing the bill length it is difficult to tell a female from a male:

Readers’ wildlife photos

March 9, 2026 • 8:15 am

I have a few batches now, so I’m complacent (never happy!). Today’s photos of Costa Rica come from reader Rachel Sperling.  Her captions and IDs are indented, and you can enlarge the photos by clicking on them.

In January I took my first (of many, I hope) trip to Costa Rica. We spent about a week in Manuel Antonio, on the Pacific Ocean side. We took a couple of nature walks in and around Manuel Antonio National Park, and we saw plenty of wildlife. One of these days I’m going to treat myself to a really good camera, but these were all taken with either my mirrorless Olympus or my iPhone camera, which are light and easy to stash in a backpack. I did see a couple of sloths – both three-toed (Bradypus variegatus) and Hoffman’s two-toed (Choloepus hoffmanni), but they were high up in the trees, so I wasn’t able to get a good photo of them.  These are the photos I was able to capture:

On the drive from San Jose to Manuel Antonio, we stopped at a creek to view some American crocodiles (Crocodylus acutus):

We saw a number of Central American Squirrel monkeys (Saimiri oerstedii), which were incredibly cute:

Then there were these little beasts: the Costa Rican mafia, aka the Panamanian/Central American White-faced capuchin (Cebus imitator). According to our guide, these monkeys can be pretty vicious with animals their own size, and they’ll just riffle through your backpack if you’re not watchful. Someone had to be on guard whenever we went to the beach.

We went on a nature walk in the rainforest at night (with a guide), which gave us the opportunity to see a lot of nocturnal animals. Among them was the Red-eyed tree frog (Agalychnis callidryas):

Masked tree frog/New Granada cross-banded tree frog (Smilisca phaeota) in Manuel Antonio National Park. I’m sorry I’m not better at identifying plants, to the disappointment of my botany-teacher father:

Black iguana (Ctenosaura similis), at the beach at Manuel Antonio:

We also saw a coati (Nasua narica), which Wikipedia tells me are diurnal, but it was definitely after sunset and that is definitely a coati. They’re relatives of the raccoon, and our guide told us that a mature one can hold its own against a jaguar. This one wasn’t afraid of us, anyhow:

Back at our b&b, this Black-hooded antshrike (Thamnophilus bridgesi) came to visit me as I read on the veranda a few times. I think it’s a female, though the sexual dimorphism of this species doesn’t seem terribly dramatic. I did see her building a nest:

On my last day in Costa Rica, I heard a tremendous ruckus in the trees outside my hotel in San Jose. I looked and discovered that the trees (American oil palms —Elaeis oleifera —I think) were full of Crimson-fronted parakeets (Psittacara finschi). They were LOUD and they were going to town on those trees. There were too many to count. Fortunately, they quieted down after sunset:

Manuel Antonio National Park from the water. These little islands are bird sanctuaries that tourists are not allowed to visit:

Sunset over the Pacific, near Manuel Antonio National Park:

Nauyaca Waterfalls, near Dominicalito, where we swam:

Finally, I thought you’d like these because they’re jaguar-inspired. We spent an afternoon at a village belonging to the Boruca, an indigenous tribe. They cooked us a delicious lunch, and showed us how they made dyes from local plants, and carved and painted balsa wood masks. The masks were first used to frighten the Conquistadores. Now you can buy them just about everywhere:

Readers’ wildlife photos

February 7, 2026 • 8:30 am

Today we have urban wildlife, from Marcel van Oijen in Edinburgh.  His notes are indented, and you can enlarge the photos by clicking on them.

Urban wildlife in Scotland: Vertebrates

Marcel van Oijen

 

We live in Edinburgh South and our back garden borders a small woodland. The following pictures were all taken in the garden over a number of years, but I sorted them by month, from January to November.

Foxes (Vulpes vulpes) are among the first visitors to our garden each year. They have become very common in British cities. There are about 400,000 foxes in the U.K., and roughly one third are city-dwellers.

Magpies (Pica pica) come in droves to our garden. They are fascinating to watch but tend to frighten off the songbirds and steal their food:

Occasionally we see sparrowhawks (Accipiter nisus) plucking pigeons apart until what is left is small enough to fly away with. The magpies resent the sparrowhawks invading their territory, and gang up against them:

Carrion crows (Corvus corone) usually come in pairs; this one was an exception. The way it walked, paused, looked around, nodded its head, inspecting everything – it all suggested confidence and cleverness:

We do not often see Great Spotted Woodpeckers (Dendrocopos major), but regularly hear them pecking away when walking in the woodland behind the garden:

The mammals we see the most are our American friends, the Grey Squirrels (Sciurus carolinensis). They tend to chase ach other away, but these two were friendly, maybe young siblings:

We are always surprised to see amphibians because there is not much open water in our neighbourhood. This summer visitor is a Common Frog (Rana temporaria):

Wood mice (Apodemus sylvaticus) are almost as acrobatic as the squirrels, and we see them climbing up the stems of plants and jumping onto the birdfeeders:

We don’t see hedgehogs (Erinaceus europaeus) often enough – we would like them to eat more of the slugs that invade our house from the garden:

This is the more common behaviour of the Grey Squirrels (Sciurus carolinensis): entering supposedly squirrel-proof birdfeeders and being nasty to each other:

We often see pheasants (Phasianus colchicus) around the golf course one kilometer away, but last November was the first time one came to see us:

Readers’ wildlife photos

December 31, 2025 • 8:15 am

Send in your photos, for it’s 2026!

Neil Taylor sent in a miscellany of photos from the UK. His captions are indented, and you can enlarge the photos by clicking on them:

Highland Cattle:
Chip-stealing Herring Gulls (Larus argentatus) gather to mob their chosen victims! Port St. Mary, the Isle of Man.

Two photos of a zebra jumping spider (Salticus scenicus) eating a greenfly (species unidentified):

A large house spider, an Eratigena species:
A labyrinth spider (Agelena labyrinthica) in its funnel web with the remains of ladybird beetles (Coccinella septempunctata):

These photos taken in the environs of Cambridge the UK unless otherwise stated:
Bombylius major – The Large Bee Fly with its large rigid proboscis for nectar feeding:

The delicate beginnings of a wasps’ nest:

A Steatoda nobilis (false widow spider) lifting a caught and wrapped bumble bee (likely Bombus pascuorum, the Carder Bee) to its lair.

An Araneus diadematus, the European garden spider, bites a wrapped and disabled bumble bee (likely Bombus pascuorum, the Carder Bee).

Araneus diadematus, the European garden spider:

An unidentified frog – Marrakech, Morocco:
An unidentified moth – Marrakech Morocco: