WORLD SHOREBIRDS DAY – ABACO’S 33 SPECIES (1): LARGER BIRDS

September 6, 2018 by Rolling Harbour

WORLD SHOREBIRDS DAY – ABACO’S 33 SPECIES (1)

LARGER BIRDS

Today, September 6th, is World Shorebirds Day. Every year, a Shorebird of the Year is selected by the organisers of this global event, and this year they have gone ‘large’. Perhaps in response to the declining populations of curlew species, they have chosen a fine representative – the whimbrel. Inconveniently – and although the whimbrel is a worldwide species – it is extremely rare on Abaco. In the definitive Abaco Checklist (see below), it is coded a TR4, i.e. a very uncommon transient with a handful of sporadic reports. Until last year, sightings were very few and far between. Then suddenly last autumn, they made a small migratory comeback. You can read about it HERE.

BLACK-NECKED STILT Himantopus mexicanus PR B 3

Abaco is home to 33 shorebird species. Like the human residents of the main island and cays, some are permanent; some are winter residents arriving from the north to enjoy a warmer climate; and some are transients – visitors that pass through a couple of times a year on their way from and to their nesting habitats.

CHECKLIST OF ALL 33 SHOREBIRDS

The definitive checklist of Abaco’s birds was compiled especially for the BIRDS OF ABACO by Bahamas Birding author and authority, the late and much missed Tony White, with Abaco’s bird expert Elwood Bracey. Below is the shorebird list, with a photographic selection of the larger and/or longer-billed shorebirds in checklist order. Yes, including an Abaco whimbrel.

The codes will tell you, for any particular bird, when you may see it (P = permanent, WR = winter resident, TR = transient, V = vagrant); whether it breeds (B) on Abaco; and your chance of seeing it, graded from easy (1) to vanishingly unlikely (5).

AMERICAN AVOCET Recurvirostra americana WR 4

AMERICAN OYSTERCATCHER Haematopus palliatus PR B 2

GREATER YELLOWLEGS Tringa melanoleuca WR 2

LESSER YELLOWLEGS Tringa flavipes WR 3

WHIMBREL Numenius phaeopus TR4 (an Abaco one)

HUDSONIAN GODWIT Limosa haemastica [V5]

Like the whimbrel, this bird is another special bird to be able to include. Until last October, it was categorised as a V5, meaning that one or perhaps 2 vagrants had ever been seen on Abaco. Then one appeared on a pond and was spotted by Woody Bracey and, a few days later, by Keith Kemp – who even took confirmatory photos. You can read the story HERE.

SHORT-BILLED DOWITCHER Limnodromus griseus WR 1

LONG-BILLED DOWITCHER Limnodromus scolopaceus WR 4

WILLETT Tringa semipalmata PR B 2

WILSON’S SNIPE Gallinago delicata WR 3

RELATED POSTS

WHIMBREL

WILLET

BLACK-NECKED STILT

AMERICAN OYSTERCATCHER

HUDSONIAN GODWIT

YELLOWLEGS

DOWITCHERS

Photo Credits: Andreas Trepte / Wiki (1);Tom Sheley (2, 5, 6, 7, 13); Alex Hughes (3);Tony Hepburn (4); Charmaine Albury (8, 9); Stewart Neilson / Wiki (10); Bruce Hallett (11); Mike Baird / Wiki (12); Woody Bracey (14)

LONG-BILLED DOWITCHER PICTURES FOR TWITCHERS

January 11, 2018 by Rolling Harbour

LONG-BILLED DOWITCHER PICTURES FOR TWITCHERS

It’s about 3 years since I featured dowitchers. There are two types, short-billed and long-billed. They are disconcertingly similar, especially if you are only looking at one bird with no comparator. However, on Abaco a good rule of thumb is that if you see a dowitcher it will almost certainly be a SBD, a common winter resident. The LBD is a rare visitor to the Northern Bahamas. And if you just happen to be wrong? Well, so might anyone else be…

I’m returning to the topic because recently Erika Gates, well-known bird authority and guide on Grand Bahama, took some excellent photos of some LBDs, and has kindly let me feature them. These birds are very unusual on Abaco, not least because they prefer fresh water rather than brackish, which is in short supply on the island and cays.

Phoenix Birder / Xeno Canto

HOW DID THE DOWITCHER GET ITS NAME?

I had assumed that the strange name for these birds was onomatopoeic, in the same way that a Killdeer is supposed to call “Kill…Deer”; and a Bobwhite, an interrogative “Bob…White?”. When I tried to check this online, I found that the usually valuable primary sources for bird info were silent on the topic. In the end, I tracked down a Merriam Webster entry that simply said “probably of Iroquoian origin; akin to Oneida tawístawis. First Known Use: 1841”. Me neither!

LONG OR SHORT – HOW ON EARTH DO I TELL?

1. HELPFUL(ISH) WAYS

On Abaco, if you see a Dowitcher the overwhelming likelihood is that it’s a SBD
The species prefer different habitats, with the LBS preferring freshwater even in coastal regions
The SBD prefers coastal areas, shorelines and brackish / muddy ponds
The SBD’s call is said to be “mellower” than the LDB – though unless you have heard both for comparison, that’s not a very useful identifier
The body shapes are apparently subtly different, in ways I can only begin to guess
In breeding plumage, the species have perceptible colour / pattern differences (if you have binoculars?)

2. CONFUSING / UNHELPFUL FACTORS

LBDs may occasionally join SBDs that are foraging on open tidal flats
Bill length may not help, there’s an overlap – some SBDs may have longer bills and vice versa.
There are theories about bill-length / head size comparison as a field ID method. Do they work? Only if you get it right, I guess.
“Winter plumage of both species is very similar” (grey). Both are only in the Bahamas in winter. So, not a lot of help.

DOES THE DOWITCHER HAVE ANY PRACTICAL APPLICATION?

Yes! In Scrabble you can form a stonking 315 words from just those 9 letters, all permitted under Scrabble rules (though not my own house rules, which forbid ridiculous 2 and 3 letter words that sound invented for the purpose of winning at Scrabble). Apart from the full 9 letter original, there’s one 8 letter word – ‘witherod’, a type of viburnum plant; and 13 words of 7 letters, of which I’d say 8 are in common though not everyday usage. I’ll leave you to work out the remaining 301 words…

Credits: Erika Gates, with many thanks for use permission; the excellent Xeno Canto / Phoenix Birder for the sound file

DOWITCHERS FOR ABACO TWITCHERS

January 26, 2015 by Rolling Harbour

DOWITCHERS FOR ABACO TWITCHERS

(THE LONG AND THE SHORT OF IT…)

Long-billed (Limnodromus scolopaceus)? Or Short-billed (Limnodromus griseus)? Which one is that over there? No, not there. There! For Abaco, the answer is very easy. The SBD is a common winter resident, whereas the LBD is an occasional casual visitor, recorded rarely and irregularly in the Northern Bahamas. So if you are looking at a Dowitcher, it’s 98% certain that’s it’s an SBD. Which is lucky – they are so similar that telling them apart is a complex ID challenge, even if seen together! Until 60 years ago they happily existed as one species until the avian powers-that-be decided to prise them apart and award them separate species status. All the birds featured here are Abaco SDBs, with one exception… More on the comparisons and differences below.

The Dowitcher’s bill is an extremely effective instrument for probing deep into low water and mud. The rapid stabbing for concealed invertebrates has been vividly described as being ‘like a sewing-machine’. A ‘Dowitcher Stitcher’. So to speak.

HOW DID THE DOWITCHER GET ITS NAME?

I had assumed that the strange name for these birds was onomatopoeic, in the same way that a Killdeer is supposed to call “Kill…Deer”. And a Bobwhite, an interrogative “Bob…White?”. When I tried to check this online, I found that the usually valuable primary sources for bird info were silent on the topic. In the end, I tracked down a Merriam Webster entry that simply said “probably of Iroquoian origin; akin to Oneida tawístawis. First Known Use: 1841”. Which left me better informed, but no wiser…

THERE’S A BUNCH OF SHOREBIRDS OVER THERE – WHAT DO SBDs SOUND LIKE?

Phoenix Birder / Xeno Canto

In the header image, the bird is foraging in shallow water. In deeper water or with softer mud, SBDs will plunge their bills in to the hilt

SHORT OR LONG – HOW ON EARTH DO I TELL?

1. HELPFUL(ISH) WAYS

On Abaco, if you see a Dowitcher the overwhelming likelihood is that it’s a SBD
The species prefer different habitats, with the LBS preferring freshwater even in coastal regions
The SBD prefers coastal areas, shorelines and brackish / muddy ponds
The SBD’s call is said to be “mellower” than the LDB – though unless you have heard both for comparison, that’s not a very useful identifier.
The body shapes are apparently subtly different, in ways I personally can only begin to guess
In breeding plumage, the species have perceptible colour / pattern differences. (If you have binoculars?)

2. CONFUSING FACTORS

LBDs may occasionally join SBDs that are foraging on open tidal flats
Actual bill length may not help, there’s an overlap – some SBDs may have longer bills and vice versa.
There are theories about bill-length / head size comparison as a field ID method. Do they work? As if!
Winter plumage of both species is very similar (grey). Both are only on Abaco in winter. Go figure.

DOES THE DOWITCHER HAVE ANY PRACTICAL APPLICATION?

Yes! In Scrabble you can form a stonking 315 words from those 9 letters, all permitted under Scrabble rules (though not my own house rules, which forbid ridiculous 2 and 3 letter words that sound invented for the purpose of winning Scrabble). Apart from the full 9 letter original, there’s one 8 letter word – ‘witherod’, a type of viburnum plant; and 13 words of 7 letters, of which I’d say 8 are in common though not everyday usage. I’ll leave you to work out the remaining 301 words…

DO YOU HAVE ANY LBD PHOTOS TAKEN ON ABACO?

I surely do. Woody Bracey photographed a pair of dowitchers together on Abaco, one SBD and one LBD. But even though this looks a pretty straightforward comparison of bill length, colouring and marking, by now I’m now so confused that I’m beginning to wish the two species could be happily reunited into one…