It’s Friday. I’ve just nixed for wild brown trout on the River Frome in the rain. I need a beer and I’ve run out of week. You can read more about the attractive little Hairy Woodpecker – Abaco’s small counterpart to the larger and noisier West-Indian Woodpecker –HERE. Have a good weekend!
This is a challenging topic that I have been (shamefully) putting off. My task is a full-scale facing-up to an extremely rare, very small, and rather adorable adversary, the Kirtland’s Warbler (Setophaga kirtlandii). There are probably more dedicated KIWA experts out there than there are birds of this scarce species. Estimates of bird numbers vary wildly, but if I take a consensus of the mean of an approximate average of the median as ± 5000 individuals, I’d probably be in the ballpark named “Current Thinking“.
THAT SOUNDS QUITE RARE, RIGHT?
Around 50 years ago, the species was all but extinct – perhaps fewer than 500 birds in total, a barely sustainable population. In 1975, Brudenell-Bruce estimated 1000. I’ll mention some of the reasons later. In the 1970s, the Kirtland’s Warbler Recovery Plan was instituted with the twin objectives of protecting the vulnerable breeding habitat – basically large areas of jack pine; and of monitoring and management aimed at encouraging an increase in numbers. Around that time, they became IUCN listed as vulnerable, but more recently, population growth has resulted in a recategorisation to the more optimistic near-threatened category.
AND THEY LIVE WHERE, EXACTLY?
In spring and summer almost the entire KIWA population lives and breeds in very specific areas of Michigan and Ontario, where jack pines are found. There are signs that the range has expanded slightly in Michigan and more widely into Wisconsin and Ohio as the numbers have increased.
A Kirtland’s Warbler in the jack pines of Michigan (Vince Cavalieri)
In the fall and winter the population migrates to the Bahamas & TCI, where they tend to choose remote scrub and coppice areas to live until the spring when they return north in April. This range map shows the extremely specialist habitat choices of these migratory birds.
A Kirtland’s Warbler in Ohio
SO THEY ARE REALLY FOUND ON ABACO?
Yes – but they are notoriously hard to find. To give you an idea, I checked the eBird stats for Abaco sightings over the last 10 years: 9 successful trips reported, with 18 birds seen in all**. There were 3 groups comprising 6, 4, and 2 birds; and the rest were single birds. Abaco ornithologist and guide Woody Bracey is the go-to man for finding these little birds. Two years ago we were in his party that saw 4 in the space of a couple of hours. I was supposedly the photographer, but unaccountably found myself in completely the wrong place for the first 3. The 4th flew off a branch and straight at my head as I raised the camera… I felt the wind as it passed on its way deep into the coppice. I’m not proud of my effort; the fuzzy lemon item beyond the twigs and leaves is a KIWA (you’ll have to take my word for it…).
HAVE ANY BEEN SEEN ON ABACO THIS YEAR?
Last week, Woody took another party to the main hotspot in the Abaco National Park, a protected area at the southern end of the island. The park is huge, covering more than 20,000 acres of (mostly) pine forest. These birds are tiny, about 14 cms long and weighing 14 gms. Despite which they found a female and then a male KIWA in their favoured habitat beyond the pine forest. Those are the only 2 I’ve heard about this winter season.
Kirtland’s Warbler, Abaco Bahamas, 12 April 2018
WHAT DO I LOOK OUT FOR?
Gray head with a blueish tinge, gray-brown back
Yellow throat & underside, with some dark streaking
Females are paler and more streaked
Split eye rings – white crescents above and below eyes
Frequent tail pumping and bobbing (‘tail-wagging’ J. Bond)
WHAT DO THEY SOUND LIKE?
Some would say ‘chip-chip-chip-too-too-weet-weet’. Elsewhere I have found they produce ‘a loud tchip, song an emphatic flip lip lip-lip-lip-tip-tip CHIDIP‘ (Arnott). You be the judge!
Ross Gallardy / Xeno-Canto
WHAT ARE THE MAIN THREATS TO THE SPECIES?
Mankind is the primary threat. The breeding areas are particularly vulnerable from deforestation and clearance of the jack pines that are essential for successful nesting and breeding – and therefore the survival of the species.
Encroachment of development is another threat, as with so many species.
There is a further threat of nest parasitism by brown-headed cowbirds, to which KIWAs are especially vulnerable.
In the winter grounds where the habitat is mostly remote or in protected areas, there is rather less of a problem from these factors – for now at least.
Overall, habitat degradation at one end of the migration – in particular the breeding grounds – poses a serious risk; at both ends, extinction could loom again.
WHO WAS MR KIRTLAND?
Jared Potter Kirtland (1793-1877)
Jared P. Kirtland (1793 – 1877) was an Ohio scholar, doctor, judge, politician and amateur naturalist. He was a man of many and varied interests and talents, not-untypical of his time. In the field of natural history, Kirtland’s name lives on in his warbler; and also in a couple of snake species.
The Bahamas Postal Service is commendably active in producing wildlife stamps
**I realise eBird is not the be-all and end-all for sighting reports. It hasn’t been in existence for as long as 10 years, and not everyone uses it anyway. And awareness of the Bahamas as the winter home for KIWAs is a surprisingly recent development (as with piping plovers). As awareness increases, so do birder interest, habitat knowledge, and consequently reports of sightings.
Another example of the ‘twigs in the way’ problem for photographers
Credits: Bruce Hallett (1, 2, 3); Vince Cavalieri (4); Tom Sheley (5); Unattributable (me, in fact) 6; Woody Bracey (7, 9); Tony Hepburn (8); Lionel Levene (10); Birds of North America (range map); Ross Gallardy / Xeno-Canto (audio file); Birdorable (cartoon); BPS (KIWA stamp). Special thanks for all use permissions for images of this rare bird.
The sounds are unmistakeable – a discordant chorus of soft chuckling noises like tongue-clicks as the RWTs flock into a bush, interrupted by harsh, metallic calls like rusty metal gate-hinges being forced open. Or maybe a lone bird mournfully repeating its eerie call from the mangroves far out on the Marls as the bonefishing skiffs slip silently along the shoreline. No other species sound quite like Agelaius phoeniceus.
The handsome males sport flashy epaulets, most clearly visible in flight or in display – for example to impress a prospective mate. Again, they are unlikely to be confused with another species.
The females, as is often the way, are less showy. I have just read that they are ‘nondescript’, which is unnecessarily harsh I reckon. Here are a couple of examples.
And the darker brown ones that are clearly not handsome black males? These are young males in their first season, before they move on to the full adult male plumage. Previously I had designated them females (as I had assumed) until very gently corrected by the legendary Bruce Hallett. Not only was Bruce an essential part in the production of the Birds of Abaco, he also keeps a benign eye on my posts and occasionally steps in to clarify IDs etc. I took the first male juvenile at Casuarina, when I also made the sound recording (below). The second was at Delphi – and with some ‘light’ issues, I notice…
Fledglings are kind of cute…
SO WHAT DO THEY SOUND LIKE?
You may need to turn up the volume a bit. You will also here a lot of dove noise and, in the background, the sound of waves lapping onto the shore.
Photo Credits: Tom Sheley (1, 2, 4, 5, 8); Alex Hughes (3); Keith Salvesen (6, 7, 9 & audio)
Yesterday an Abaco friend asked me to ID a striking-looking bird photographed in the coppice by their house. It was a Bahama Yellowthroat, one of the 5 bird species endemic to the Bahamas. The bird was not clear enough for use here, but I’ll take any reason to feature these lovely creatures, with their trademark Zorro masks.
The other endemics are the Bahama Woodstar, Bahama Warbler and Bahama Swallow – all found on Abaco. The fifth is the endangered Bahama Oriole. Sadly these fine birds are now only found in very small numbers on Andros. They once lived on Abaco too, but have not been recorded there since the 1990s, and are considered extirpated. You can find out more about all these endemic birds HERE.
The Bahama Yellowthroats have a cousin, the Common Yellowthroat, that is a winter visitor on Abaco. There is some scope for confusion between the two birds, although a close look will reveal several differences. But let’s not get into that kind of detail right now… it would slightly detract from this little ‘gallery of gorgeous’.
One reason for my fondness for the yellowthroats is that it is one of the few species that I am able to imitate with sufficient accuracy to draw one from the depths of the coppice to the front of stage. It’s usually described as a ‘wichety-wichety‘ call, and the talent to mimic it has no other uses in life. Here’s a short recording I made – the Yellowthroat is the first and last call of the sample, with other species in between.
These are curious birds, and are not afraid to pose for a while, watching the watcher. They are also very vocal birds. You’ll see that many of these photos show them singing (‘vocalising’). You can even see their tiny tongues!
A couple of these images feature in THE BIRDS OF ABACO. This is a good moment to mention that we still have some remaining books, and right now we have a seasonal offer on them of a festive $88 plus shipping. A drop in MH can be arranged. Interested? Let me know or email the Delphi Club direct at firstname.lastname@example.org
Photo Credits: Gerlinde Taurer (1, 3); Bruce Hallett (2, 5); Tom Reed (4); Charles Skinner (6); Tom Sheley (7); sound recording Keith Salvesen / Rolling Harbour
There are two grebe species recorded for Abaco. The LEAST GREBE is the most common; the pied-billed grebe (Podilymbus podiceps) is rarer. These small birds, often called dabchicks, are marsh and pond dwellers. They are sometimes found in brackish or even salt water.
The pied-billed grebe is somewhat larger than the least grebe. In the breeding season, they have a distinctive black beak-ring. In the header image, the bird is just starting to acquire the ring. Their dark eyes also distinguish them from the golden-eyed least grebe; and their beaks are pale rather than dark.
Least grebe with golden eyes and dark beak
Pied-billed Grebe for comparison
These birds have lobes on each toe rather than webbed feet. This helps them to paddle and to dive – which is how they mainly forage. They can stay under water for up to half a minute, often surfacing some distance from the entry point. This is one method they use to avoid danger – especially as they don’t fly with much enthusiasm.
Grebes rather endearingly carry their young on their backs until the chicks are old enough to fend for themselves. The main threat to the species is habitat loss, especially of wetlands. The decline in local populations of this once-prolific bird is such that in some places they classified as threatened or endangered.
The pied-billed grebes’ call has been rendered thus: a “whooping kuk-kuk-cow-cow-cow-cowp-cowp.” If that helps you at all. If not, try this clip:
Michel St Martin / Xeno-Canto
Credits: Tom Sheley, Tony Hepburn, Keith Salvesen (least grebe), Linda Barry-Cooper, MDF / wiki, Dori / wiki; Sound file, Xeno-Canto; Cartoon, Birdorable
Just over 3 years ago, THE BIRDS OF ABACOwas published and launched at the Delphi Club. The book was intended to showcase the wonderful and varied bird life on Abaco – home to endemics, permanent residents, seasonal residents, and a wide variety of migrating transients. The book has been most generously received and supported – though I have to report that already its definitive checklist (dating from 1950) has become outdated with the recording of 6 additional species on Abaco, featured elsewhere in this blog.
Tom Sheley was one of the main photographic contributors to the book, and I had the good fortune to coincide with one of his trips to Abaco, when he was armed with significant photographic weaponry; and to accompany him on some of his photographic day trips (not including the early morning ones, in my case). This clapper rail is one of my favourites of his photo sequences of a bird being a bird – preening, stretching, calling – in its own habitat.
My one regret about my involvement in producing the book (it took 16 months) and more generally in the wildlife of Abaco is that I have entirely failed to progress to sophisticated (expensive) photographic equipment capable of producing images the quality of Tom’s. Yes, I’ve moved on from compacts (ha!) to bridge cameras (Panasonic Lumix + lens extender), and some results ‘make the cut’. But my move up to a Canon SLR was mainly disastrous, and when eventually I inadvertently drowned it (I overbalanced while photographing shorebirds from breaking waves. Total immersion. Total stupidity.) I felt an unexpected sense of relief. A blessing really – I never understood it, nor in my heart of hearts (if I’m honest) really wanted to… But my feeble struggle made me realise and appreciate the enormous skill of those like Tom who take ‘National Geographic’ quality photographs. It’s not just the equipment – it’s knowing exactly how to use it, and often in a split second…
Photos by Tom Sheley – with thanks for the adventures
The LA SAGRA’S FLYCATCHER(Myiarchus sagrae) is a common resident breeding species of flycatcher on Abaco, and these very pretty small birds can be seen in many habitats – pine forest, scrubland, coppice and gardens, for example. They are insectivores, as the name suggests, but they also eat seeds and berries.
As a ‘tyrant flycatcher’, this little bird is a member of the large passerine order that includes kingbirds, pewees and phoebes, with which they are sometimes confused. I last wrote about LSFs in the infancy of this blog, illustrated with my own rather… ahem… ‘simple’** photos. Time to revisit them and to do them justice with some new, improved images.‘
‘Simple’ photo from a less complex era, taken with a 2mp ‘Cheepo’™ camera
Magnificent photo by Gelinde Taurer that you can actually enlarge (click pic– see?)
Unlike many bird species, adult LSFs are very similar in appearance in both sexes. Whatever the gender, they are sometimes confused with their cousins the Cuban Pewees, but those have a very distinctive eye-crescent.
Cuban Pewee – note eye-crescent, absent in the LSF
Both species have a tiny hook at the end of the (upper) beak – to help trap insects, I assume
Another thing to notice about LSFs is the amount of rufous brown in their plumage, particularly on the wings and tail – and even at the base of the beak. This coloration is absent from their larger cousin kingbirds, the loggerhead and the gray.
WHAT SHOULD I LISTEN OUT FOR?
“A high pitched single or double noted sound described as ‘wink’... ” Or it might be ‘bip‘. Or ‘weep‘. Or (on one recording I listened to, complete with sonograph) it sounded like ‘chi-chitty chew‘. But it may have been a misID.
Hans Matheve @ Xeno-Canto
A hint of a crest is visible in this photo
ANY IDEA WHAT LA SAGRA CHICKS LOOK LIKE?
Well, as it happens, yes. By good fortune Abaco photographer and piping plover monitor Rhonda Pearce happens to have had a nest at hand this very season. So, happy to oblige…
WHO OR WHAT IS A ‘LA SAGRA’ WHEN IT’S AT HOME?
Mr La Sagra was a multi-talented Spanish botanist. Ramón Dionisio José de la Sagra y Peris(1798–1871) was also a writer, economist, sociologist, politician, anarchist, and founder of the world’s first anarchist journal El Porvenir (‘The Future’). At one time he lived in Cuba and became director of Havana’s Botanical Garden. His name lives on more significantly in ornithological than in anarchist circles (actually, ‘anarchist circles’ must be a contradiction in terms… that should be ‘anarchist disorganised squiggles’)
I note in passing that La Sagra is a provincial area in Spain, an Italian festive celebration, a chocolatier, and a small comet… All these meanings may have to be negotiated online before you get to the flycatcher…
Ramón Dionisio José de la Sagra y Peris
Continuing this blog’s philatelic natural history theme, here are stamps from the Cayman Islands and Cuba featuring the La Sagra’s Flycatcher. The Cuban stamp commemorates the death of Juan Gundlach, the man who chose La Sagra’s name to bestow on this bird. And Gundlach’s name lives on in the Bahama Mockingbird Mimus gundlachii…
** ‘Simple’, as in ‘not completely disastrous for an amateur effort but frankly not the sort of standard we have come expect around here’.
Photo Credits: Gerlinde Taurer (1, 4); Tom Reed (2, 6); Keith Salvesen (3 [!], 5, 12); Charles Skinner (7, 8); Peter Mantle (9); Rhonda Pearce (chicks) 10; Tom Sheley (11); Ramon and stamps, open source