In the early weeks of March, 2008 an unprecedented explosion of rails and crakes, notable for both variety and abundance, not to
mention the extreme rarity of certain species, was discovered at Tocumen Marsh, a popular and unpredictable
birding site on private property to the east of Panamá City. In the excitement accompanying the first
few days of these sightings we have received a veritable tidal wave of e-mails and attached photos of the birds, due in large part to
the efforts of the owner of the Canopy Tower and Lodge, Raúl Arias de Para, who connected (via e-mail) an assortment of
ornithologists, birding tour leaders, experienced Panamanian birders, and regular visitors such as myself. As such
Raúl has created a virtual community of interested parties in regards to Panamanian birds, and
exciting reports and lively discussions to follow are disseminated at a rapid pace. This page represents my effort
to present the series of events surrounding the discovery of the Tocumen rails as it occurred, and to provide an
ornithological and historical context regarding the locale and the birds. Information continues to flow as skilled birders
flock to the marsh, so watch this page for updates. I am especially grateful for the cooperation of top-notch Panamanian birder
Darién Montañez, proprietor of the Xenornis website.
Darién's site does a tremendous job of collecting bird reports from native Panamanians (while The Canopy Report gets
most of its traffic from foreign visitors), and through a gracious cross-posting agreement I can include here the
fine reports and photos from Xenornis, without which the story would be incomplete. Do yourself a favor and pay a visit
to Xenornis. To follow is the exact text
of the e-mails received on the subject of the Tocumen rails, with only minimal editing for grammar. All photos have only been edited
for size and clarity, and remain under copyright of their respective authors. Enjoy!
On March 7th, 2008, Carlos Bethancourt, senior guide at the Canopy Tower, sent word of the Spotted Rail pictured above, discovered by Tower guide José Perez and Chris Benesh and George Armistead, leaders of a Field Guides Inc. tour group, at Tocumen Marsh. For the record, José is the junior guide at the Tower, but has settled into his job amazingly well, and has developed both English-language skills and digiscoping ability at a rapid pace, the latter evidenced by his outstanding shot of this rare and elusive bird. According to José a fledgling bird was also observed, and Chris Benesh collected audio of the vocalizing rail.
Thanks to Carlos' quick e-mail, and I'm sure a flurry of phone calls within Panamá (I was, sadly,
on a plane from Panamá to New York at the time of the sighting), the small-but-dedicated
Panamanian birding community was quick to react. The first birders on site the next morning, Saturday, March 8th. were
Rosabel Miró (President of Audubon Panamá), her husband Karl Kaufmann, and Claudia and Bill Ahrens. All of the above,
I believe, live in Cerro Azúl, north and only slightly east of Tocumen Marsh. They were joined shortly by Samuel Britton,
a respected Panamanian guide, with two birders in his charge. Here's Rosabel's report:
My Spanish is not perfect, but Rosabel reported finding multiple adult Spotted Rails, several juvenilles, and one
fledgling, seen very well and even vocalizing in clear view. Large numbers of very active Soras were also observed,
and another great surprise was the sighting of a pair of Paint-billed Crakes, seen separately by most members of the group.
Below are Rosabel's excellent photos from her first day at Tocumen: at top is a great look at an adult Spotted Rail, at center a
fine juvenille bird (with a Wattled Jacana at right), and at bottom a dark but excellent look
at an adult accompanied by a chick, incontrovertible evidence
of the species' breeding status in Panamá.
Tocumen Marsh: Located about 30 minutes' drive east of Panamé City, very close to the international airport, Tocumen Marsh has long been a popular birding site for Panamanian residents and foreign visitors alike. The site historically contained large tracts of freshwater wetlands, but most of these were drained to create commercial rice fields. However, the rice fields themselves are flooded enough that Tocumen still provides habitat for good numbers of birds of aquatic habitats, and many species of scrub and open country are also found here. It should be noted that rice fields represent some of the favorite locations for spotting rails in the United States and elsewhere, as unaltered wetlands are increasingly disappearing throughout the world. For unknown reasons Tocumen experienced a burst of unusual rail activity in the early 1980's, but most of the rarest species have not been seen since, despite relatively thorough and consistent coverage of the area by birders. Over the years Tocumen has been host to a number of extraordinary rarities (probably due more to said birding coverage rather than the uniqueness of the site), including Long-winged Harrier, Dwarf Cuckoo, Lark Sparrow, and Jabiru. Panamanian birders find it convenient due to its proximity to both Panamá City and the gated community of Cerro Azul just to the north, home to a number of dedicated birders. The rice company has been gracious enough to permit access to Tocumen six days a week (excl. Sun.) starting at 7:00 a.m., with a small fee to be paid in the company office. While the large site is most easily birded by car, an independant traveller who doesn't mind a lot of walking can get to the village of Tocumen by bus, and might be fortunate enough to find a taxi to eliminate the long walk through a housing development (discussed below) to the front gate of the property. I recommend picking up a copy of A Bird-Finding Guide to Panama by George Angehr and Dodge & Lorna Engleman (avaiable via ABA Sales or Amazon.com), which provides excellent details regarding Tocumen and, of course, many other birding sites in Panamá. Spotted Rail: The rail that started it all- this distinctive species had previously been seen in Panamá on only three occasions: in 1957 in San Blas Province, in 1978 at Tocumen Marsh, and in 1984 at Ft. Sherman in Colón Province. Interestingly, the previous Tocumen bird, found by Victor Emanuel et. al., had a chick in tow as well. Why this species was confirmed to be breeding and then disappeared from the site for 30 years, when it is again breeding locally, is one of the great mysteries surrounding this rediscovery. Paint-billed Crake: This was one of the prize species of the 1982 Tocumen rail incursion, but they have not been found at the locale since. The only other records of Paint-billed Crake come from the marshes around Changuinola in Bocas del Toro Province, where the species was seen on multiple occasions between 1981 and 1988. Colombian Crake: This species was present at Tocumen Marsh in decent numbers in the 1092 incursion, and stuck around and apparently bred until 1984, but has not been seen since. The only other record for Panamá is of a specimen collected at Achiote Road in Colón Province in 1965. This year's Paint-billed Crakes were intially identified as Colombian Crakes (they are quite similar in appearance), and birders are hoping that the intense investigation of Tocumen might yet yield the discovery of this third species of long-lost rail. Gray-breasted Crake: This secretive species has been reported from a number of locales in Panamá, but very sporadically. The first records from Tocumen Marsh did not come until September of 2006, when Robert Ridgley and Carlos Bethancourt found one in the same general area as this year's discoveries. The species has been heard and seen a few times since; I was lucky enough to see it and collect audio shortly after the initial sight record. As Angehr and the Englemans point out, knowledge of its voice has led to more frequent reports in recent years; Gray-breasted Crake produces a rattle that is similar but somewhat shorter in duration than that of the widespread White-throated Crake. Gray-breasted also emits a soft beeping sound that can be hard to hear. White-throated Crake: This is the only widespread species of small rail in Panamá, and can be seen (at least briefly) by most birders with a modicum of effort; it is fairly common at a number of easily-accessed sites, and seems to do quite well in small and somewhat disturbed patches of wetland, a trait seemingly not true of the other small rails, which certainly is part of the reason for their relative scarcity. White-throated Crake is the "default rail" at Tocumen Marsh or anywhere else in Panamá. Yellow-breasted Crake: This tiny rail has been reported sporadically from many locations throughout Panamá, and certainly is a regular breeder, but it remains one of the hardest birds to find in the country. Many of the most skilled and tenacious birders in Panamá have yet to see one. I enjoyed a classic case of beginner's luck when in August of 2003, on my very first full day in Panamá, I found and filmed a pair of Yellow-breasted Crakes with as many as four downy young in tow at the Ammo Dump Ponds in Gamboa (Alexis Sanchez, Jesse Fagan et.al. were also present). The birds were not seen again and were not subsequently recorded from this location until José Perez spotted (and photographed) one in July of 2007.
Sora:
This species is a fairly common winter resident in Panamá, and in some years is apparently quite common
at Tocumen Marsh. Still, I believe the sheer numbers scurrying around the marsh in this year's rail explosion
are noteworthy, as even the most experienced Panamanian birders seemed surprised by the abundance of Soras.
For the record, George Angehr directs his final query at Robert Ridgley, esteemed ornithologist and
author of A Guide to the Birds of Panama, and Dodge Engleman, who, with his wife, Lorna, co-authored the recent
publication A Bird-Finding Guide to Panama, and who is a respected birder with years of experience in Panamá
and elsewhere in the neotropics. George Angehr comes with impeccible credentials; aside from his multiple publications regarding
the birds of Panamá, he serves as the chair of the country's Avian Records Committee, and is certainly a leading luminary
in the contemporary Panamanian birding scene.
George refers to the dead Paint-billed Crake dropped by a Great Egret; Darién Montañez states that the
egret was "coaxed" into relinguishing its prey, leading to believe that Dr. Angehr took a more direct role in collecting
this valuable specimen! It should be noted that George is an experienced ornithologist, and average birders should be discouraged
from trying to wrestle prey from the sharp and large bills of wading birds. Below are a couple of photos of the
moribund Paint-billed Crake.
Rosabel Miró, Carlos Bethancourt, and Jeremiah Trimble sent in a bunch of photos of various rails and crakes; they are presented below, and I have numbered them for easy reference.
The top four photos are all courtesy of Rosabel Miró; number one shows a Paint-billed Crake (at right) with a Sora, and number two is an even better look at the crake.
In number three a Paint-billed Crake keeps the company of four Soras- the idea of getting five rails in a single frame is just ludicrous! Number four is a fuzzy shot, but shows the Paint-billed Crake
(with Sora in foreground) flapping its wings, the diagnostic barred flanks in view. Number five is the best shot collected of a Paint-billed Crake by Boston birder Jeremiah Trimble; welcome to Panamá, Jeremiah!
The last three shots come from Carlos Bethancourt; number six is the best look we have at the barred flanks of the Paint-billed Crake.
Numbers seven and eight show the crake next to a Sora, and the dull bill and legs might indicate that the bird is a young adult, as suggested by Darién Montañez.
Notice that most of the photos do not give us a good look at the flanks and rump of the bird, the barring there being the best field mark that distinguishes Paint-billed Crake
from Colombian Crake, which has buffy-to-yellow flanks. It is no wonder the first birders to spot the crakes were at first uncertain
as to specific identity. A Guide to the Birds of Panama illustrates Colombian Crake as having a red iris and a dark forward tip of the bill, and Paint-billed Crake as having a dark iris
and yellow forward half of the bill, while the bird(s) in the images below clearly have a red eye and yellow tip of the bill.
More current field guides for the region (e.g. Restall et. al.'s Birds of Northern South America) show that both species
share the characteristics as photographed here; they also show Colombian Crake as being a paler gray color than Paint-billed, possibly
a good field mark. All of this underscores the difficulty of field identification, the importance of photographic documentation, and the unreliability
of even the best field guides. We are fortunate that such diligent and skilled observers are in the field studying these rails, and
the distinct possibility remains that Colombian Crake will be found and identified at Tocumen Marsh in the near future.
Lest we forget the Spotted Rails, the following photos were contributed by Karl Kaufmann, husband of Rosabel Miró, and a
bright light in the world of Panamanian birding, both in terms of his observations and the couples' generosity
in opening up their Cerro Azul home to scores of visiting birders. The numbers on the photos reference Karl's notes
in the paragraph below. Notice that, in Karl's photos, the Spotted Rail's bill is much thicker
than illustrated in the field guides (as he noted below)- I've scanned a few of the more accurate volumes on my bookshelf, and none of them
correctly depict the stout bill of this rail. Is it possible that the Panamanian birds belong to an as-yet undescribed subspecies of Spotted Rail?
The likelihood that every field guide for the region would depict the species inaccurately seems incredible. Food for thought.
Karl Kaufmann was also kind enough to submit several photos that document the landscape surrounding the rails'
location, and the human pressures being placed on this habitat. To follow is the text of his note, accompanied by several
photos; the numbers on the images reflect the content of his note.
A few days later, Darién Montañez published photos of some of the rice fields after an untimely harvesting. Thankfully, some fields remained untouched, perhaps part of the secret as to how the rails persist in such a pressured environment. The top two photos below show the rice fields post-harvesting, including much of the habitat that sheltered the rails only a few days before. The bottom photo shows the untouched rice fields across the road, to which the rails seem to have escaped. The impact of development on Panamanian birding habitat continues to be documented by conscientious birders and scientists; in a country half the size of New York State, with a population barely exceeding 3 million, it seems absurd that this fertile land cannot supply the needs of its human population while maintaining untouched habitat for its unique flora and fauna. Yet the land continues to be altered, due in part to the demand for crops for export, and in part due to poor land-management policies. One can only hope that Tocumen Marsh, already altered as it is, will maintain its semi-feral state, and continue yielding avian gems for many years to come.
Raúl Arias de Para, owner of the Canopy Tower and Canopy Lodge, and Carlos Bethancourt, his senior guide, have connected, via e-mail, an assemblage of Panamanian birders, ornithologists, tour leaders, and other parties with a specific interest in the birds of Panamá. News of good sightings spreads quickly among this group, and comments and observations are quickly disseminated; here's a few of the highlights regarding the Tocumen rails:
This is the big question hanging out there, alluded to in almost every note reprinted here; why so many rare rails, and why now, after apparent abscences of more than two decades? Here's a few possible explanations:
Over the last few weeks a smattering of reports have come in regarding the Tocumen rails; the numbers of birds and birders both
seem to have declined a bit following the partial rice harvest. First up is a nice report from Karl Kaufmann, accompanied by some
outstanding photographs.
The photo at left below shows an adult Sora behind an immature bird, illustrating the distinct difference in size. The photo at right shows a rather bedraggled White-throated Crake; this is the most common rail in Panamá, but one that is nonetheless hard to photograph.
At left below is a splendid shot of an adult Spotted Rail sheltering a downy chick. More proof-positive that the species is breeding this year in Panamá! At right is a great solo look at the immature Spotted Rail.
Karl enjoyed some excellent looks at the reclusive Yellow-breasted Crake, as evidenced by the fine shot reproduced below at left. At right is another fine image, of a Spotted Rail climbing stalks of rice to grab a billful of food. Good stuff from Karl; by the by, note the comments above regarding the unseasonal rice harvesting at Tocumen. It would seem that the unusual weather patterns and subsequent habitat change are at least in part responsible for this year's rail explosion at Tocumen.
George Angehr submitted the following comments, after viewing the photos below of a Paint-billed Crake, submitted by Jeremiah Trimble. George particularly references the image at right, which shows a crake with an unusually buffy rump.
On Monday, March 24 Rosabel Miró and Delicia, Camilo and Darién Montañez went looking for any suspicious Neocrex, but found none. There were plenty of Spotted Rails, two or three sightings of Yellow-breasted Crake and a single White-throated Crake, but there were very few Soras left. Then on Tuesday, March 25, Bill Adsett, Mark Letzer and Charlotte Elton visited, and also saw no Neocrex. They did see the Spotted Rails and a few Yellow-breasted Crakes, and even a Gray-breasted Crake. On March 28th David Klauber, a respected birder from New York State, and one of North America's top listers, submitted the following report, accompanied by a fine photo by Bill Adsett.
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