The eight days at Viruá National Park with my client-friend Susanne whizzed by in a flash. Each day was full of very cool sightings, and I continued to learn bit-by-bit about the mushrooms. As I expected, internet was not reliable there. As it turned out, I was able to connect using advanced secure web proxy settings provided by the staff there, but it still gave me only rare access to anything other than Facebook, and even then it would often prompt me for the user name and password on the average of once every two seconds. So I didn’t try that often.
I have many great photos of so many cool birds, bugs, plants, and other things, but maybe the most unexpected and delightful discovery was of Gray-legged Tinamous, the first for the park and the state of Roraima. I heard this bird very distant one day and shrugged it off as too far to really tell what I was hearing. But the next day it was much closer, and it was very clear that I was hearing a tinamou that was unlike any I had ever heard. It wasn’t any tinamou on the list of park, the only one of which I didn’t already know was Red-legged Tinamou, a bird I was hoping to at least hear. But I had a recording of that species in my iTunes library, and it wasn’t even close. Luckily, three things coincided: it was easy for me to mimic the whistle, the understory of the forest in this location was relatively open, and the bird was uncommonly responsive. I recited the visual marks as it approached within a few meters and I recorded its song; the grayish blue legs were the first thing I mentioned, as I was really hoping to see red legs. I managed some blurry photos in the dark understory.
A look in the field guide from van Perlo quickly led me to Gray-legged Tinamou as the only match, as the description of the voice was pretty conclusive. But with my iTunes library having over 29,000 recordings of bird voices representing more than half of the world’s 10,000 species, I had no example of the ultra-local and little-known Gray-legged Tinamou. So my guess was still tentative until Facebook communications with my friends Alex Lees and Andrew Spencer confirmed the identity of my recording as that species. We eventually heard two others, seeing one of them well, and getting a really nice recording of one, which I’ve uploaded here to xeno-canto.
This area is still not that well known, as birders first began to explore here only in 2001. But a major paper was published just last year with 14 authors providing a comprehensive bird list from the national park and adjacent areas, and no mention was made of this species. But there are three other species that I detected that would be new for national park, though not as well documented, and maybe better left for future visits. One was Orange-breasted Falcon, a calling bird that flew over the forest with something in its talons, a second was a probable Rufous-winged Ground-Cuckoo that I heard only by bill snaps on our last morning, and the third would be one of the larger, browner Chaetura swifts that are all but impossible to identify in the field. (Probably Chapman’s Swift, but who really knows the true distribution and seasonal movements of Sick’s and Amazonian, not to mention Chimney, which surely also occurs here but not this time of year?)
Yesterday, Susanne and I flew from Boa Vista to Brasilia, where we said our farewells, and I continued on to Cuiabá (and she on to São Paulo), where I have two full days to try to catch up with photo sorting, labeling, and uploading; emails; and preparing for my upcoming tour in the state of Mato Grosso. Americans unfamiliar with Brazil might not appreciate the size of this country and the huge differences in landscape and climate in the distances we covered. My flights yesterday, for example were roughly the distance equivalent of flying from Tucson to Chicago and from there to New York City – but keep in mind that we crossed the equator, traveling from the middle of the rainy season to the end of the dry season.
Here’s a view looking westward as we passed over the Amazon River about 150 miles downstream from Manaus, where the Rio Uatumã and the Amazon combine to form a waterway about 20 miles wide.
Wednesday, July 29, 2015
Sunday, July 19, 2015
Serra do Tepequém
We’re headed
to Viruá National Park today, we might not have internet for a week. So quickly
here are some photos from the past two days.
A view from
the steep south slope of the mini-tepui of Tepequém, looking to the west,
towards Venezuela.
Gilded
Barbet. When we go to Virua, the replacement species there should be Black--spotted
Barbet.
We’ve seen
lots of other birds and some great fungi, but the most interesting thing was
under a piece of wood along the trail – an odd ant nest (incidentally co-habited
by a large spider that disappeared under the structure before I could get its
picture).
The ant nest
structure appears to be the fungus garden of a small-colony species of leaf-cutter
or harvester ant. It was very fragile. Maybe an ant specialist will be able to
comment on it after I send some photos around.
Saturday, July 18, 2015
Boa Vista to Tepequem
I’m currently
leading a short 11-day, 12-night private tour with Susanne, the same mushroom
and natural history-loving client who was with me in SE Peru last October and
November. We’re in this northernmost state of Brazil because this is where the
rainy season should be in full swing. That’s when mushroom should be at
its best.
We flew from
Manaus to Boa Vista, then drove north through partially wooded to very open
savanna habitat, dotted with lakes.
The general
shape of the landscape reminds me of the prairie pothole region of the Great
Plains, but a glance at the plants instantly erases the comparison. This pond
in particular was like nothing I had seen before, the center occupied by a
thicket of a tall-stalked aroid that could be a Xanthosoma.
We made one
serious birding stop at the crossing of the Rio Uraricoeira.
We
progressed not more than 50 yards down the road in 80 minutes with not a break
in the bird activity in mid-afternoon, 32 species being my count.
We soon saw
a pair of Black-crested Antshrikes, the more colorful one being the female.
This Ruby-topaz
Hummingbird looked black no matter how much I overexposed the shot.
Green-tailed
Jacamar
Mouse-colored
Tyrannulet
We saw one
of the specialties of this location, the Hoary-throated Spinetail.
Of course
there was more than just birds. I was excited to see this Dalechampia species, a vine in the euphorbia family.
Then I
noticed this caterpillar, probably a butterfly, feeding on the leaves – almost
certainly a specialist.
I thought
this flower looked like a Clerodendrum.
We made
stops on the way for only important things, such as this Red-footed Tortoise.
I hadn’t
seen Gray Seedeater since I was in Venezuela in February 1999.
And I don’t
get to see the adorable Pearl Kite all that often either.
The best
stop of the early evening was for this Giant Anteater. It was just about to
cross the road; we came to a stop just past it, and I watched it out my
passenger seat window just a few feet away. By the time we turned back and I
could get my camera out, it had already begun its retreat back under the fence
and then slowly worked its way out into the field.
Thursday, July 16, 2015
Arriaga and Puerto Arista, Chiapas
For my last
day of leading field trips for the GBNA meeting in Chiapas, I was assigned to
take my group for Rose-bellied Bunting (that’s the official AOU name; many
people prefer Rosita’s Bunting, but I think that follows the traditional,
sexist practice in old-school ornithology of using a woman’s first name rather
than her last name) and Giant Wren, two local endemics in the region.
Rose-bellied
Bunting is surprisingly common in the humid patch of forest on the pacific-facing
slope of the middle elevations of the Isthmus of Tehuantepec. Inland from here
(north, in this case), the forest is too wet, tall, and tropical. Lower down
towards the coast the forest is too dry. East and west on the Pacific slope at
this same elevation, the inland mountains are much taller and the land mass
much broader, blocking the moist Gulf of Mexico airflow, resulting in forests
that are also much drier and thornier, not what this species needs. After
Yellow-green Vireo, it was the most common bird here, and it was nice to be
able to see birds without using playback.
I thought
that seeing this male grab and then eat a green stick insect was pretty unusual
(a blurry photo in the limited very early morning light), but it turns out that
the previous day’s field trip led by Michael Retter saw the same thing.
Orange-breasted
Bunting is also common on this stretch of road above Arriaga, but it prefers to
be down lower where the forest is drier; there are a few kilometers where both
buntings occur together.
The rest of
our day was spent on the flat, sparsely-wooded coastal plain of Chiapas. Here
we found what Steve Howell has named “Ridgway's Flycatcher,” long considered a
well-marked subspecies of Nutting’s Flycatcher (at least in the museum tray),
but shown by him to have a clearly distinct set of vocalizations (more like
Panama Flycatcher, actually) and habitat, and occurring with just a few miles
of typical Nutting’s Flycatchers. The AOU committee on taxonomy and
nomenclature did not accept the suggested split, mostly because none of them
have personal experience with these birds and don’t spend enough time getting
to know them in the field. While it’s true that a scientific paper showing the
consistent differences would be good to have, I have little doubt that if the
committee members had had extensive field experience with these birds, they’d
all recognize that this split is a total no-brainer and that they’d see a
peer-reviewed paper to be unnecessary.
The very
local but common Giant Wren was our main target, and while we easily saw just this
one family group, we heard at least three others in different directions at the
same time.
Their
chortling duet or chorus is quite amusing. This recording is from my first
visit to this area almost 10 years ago.
We had a
pair of Citreoline Trogons in the same location.
Being flat
and near the coast, this area is also relatively wet, with many ponds,
channels, and mangroves. This pond had Northern Jacana, Black-bellied
Whistling-Duck, and Bare-throated Tiger-Heron.
A close-up
of a Northern Jacana, showing its long toes.
We had a
great auditory experience with two Ruddy-breasted Seedeaters countersinging
from opposite sides of the road at very close range. One was an adult male, the
other a young male in a female-like plumage.
Then rather
have our third lunch of rather boring tamales and juice from the back of a bus
in the hot sun, I made the suggestion of sitting down in a palapa on the beach
to have a cold beer or soft drink, and everyone was on board with that.
In fact,
everyone ordered from the menu, with shrimp and fish being popular. I ordered
fish tacos, even though it was not on the menu. But it turns out that the
Isthmus of Tehuantepec is not only a biogeographical barrier, but also a
culinary one. This is what they brought me; even our driver, originally from
Mazatlan, laughed at how ridiculous they were.
It was
refreshing to just sit in the ocean breeze, but some people, like Kristie, just
couldn’t sit still until she got wet.
This Willet
walked by as we were having lunch.
Next blogs will
be from Brazil!
Wednesday, July 15, 2015
Sumidero Canyon National Park
On my fourth
day of leading field trips here, I did the nearby Sumidero Canyon, allowing me
to sleep in a couple more hours. The nearly sheer faces of the canyon down to
the Grijalva River reservoir offers one of the most impressive geologic vistas
I’ve ever seen.
The birding
here is interesting, with some dry forest and humid forest things, as well as
some local specialties, such as this Bar-winged Oriole, the only one we saw.
A very
scarce and local bird in Mexico is the Blue Seedeater, and this singing bird
was in the same place where Michael had it yesterday.
Yet another
specialty here is the odd but pretty Belted Flycatcher.
There are
lots of orioles here, the favored host of Bronzed Cowbird, so one sees them all
along the road.
At our last
stop a lively Canivet's Emerald came in to my Ferruginous Pygmy-Owl imitations.
We saw lots
of other cool things. This wooly caterpillar will eventually become a probably drab
moth.
This tiny
black metalmark was one of about seven that were only briefly landing on the
upper leaves of a small tree, then taking off and chasing around others,
sometimes all together in a whirring ball of energy. When they landed, they
opened the wings flat to grab the morning sunlight, and this is all we saw;
they matched nothing in the field guide.
So I sent
the photo to Jim Brock who recognized it as a Sarota, and he reminded me we had seem some do this at Cristalino
Jungle Lodge seven years ago. The vast majority of the time they are
encountered, they perch on lower vegetation with their wings closed and look
like this, my photo of Sarota myrtea,
White-cheeked Jewelmark from SE Peru.
One of the
participants spotted this stunning green grasshopper at the canyon vista, a
nymph of the very diverse genus Melanoplus.
Thanks to my contact Ricardo Marño-Pérez for the ID.
Also at the
canyon vista was this Chlosyne theona,
Theona Checkerspot.
What looked
like a scar on a tree trunk turned out to be a group of roosting 15-cm long morpho
caterpillars – perhaps White Morphos. During the night they climb to the
canopy to feed on foliage, then retreat before sunrise to avoid birds that prey
on them.
This leaf-mimic
katydid with a horn on its head is reminiscent of the genus Copiphora, but the flattened legs and
odd behavior suggests it might be something different. While slowly walking it
swayed to and fro, much like an American Woodcock. This is surely a tactic to
avoid notice by a bird, such as a trogon, who might take it for a swaying leaf.
On a later
afternoon stop we encountered the mother of all puddle parties. I estimated 20
species of butterfly in this one group.
Most of them were Chlosyne erodyle, the Guatemalan Patch or Erodyle Checkerspot, like
the one in the lower left, but I got only a couple photos of those I didn’t
recognize right away. This unusual medium-sized satyr is Taygetina kerea, Kerea Satyr.
This boldly
marked skipper is Antigonus corrosus,
Small Spurwing.
It’s been a
pretty good trip for orchids. Thanks to my contact Gerardo Salazar, who is
working on a book of orchids of Mexico, I now know this as Dichromanthus cinnabarinus. It looks very similar to a couple other
unrelated orchid genera that have independently evolved to attract hummingbirds
as pollinators (such as this Sacoila lanceolata), which we know thanks to an
amazing research paper that looked into the genetics by Gerardo and others.
Gerardo also
identified this orchid as a rarely seen Triphora
debilis, which was growing right in one of the trails. Even Gerardo has
never seen one live, and the university museum where he works at UNAM even
lacks a specimen!
By the way, Eric,
who led the Tapalapa field trip today, came back with a report of as many as
six Mountain Elaenias.