GREATER ANTILLEAN BULLFINCH (“POLICE BIRD”)

Greater Antillean Bullfinch, Abaco (Erik Gauger)

GREATER ANTILLEAN BULLFINCH: ABACO’S “POLICE BIRD”

Following my last gloomy post about the widely-reported die-off of the poor, exhausted migratory great shearwaters, let’s turn with relief to a cheerful bird known to all and admired in coppice and garden: the Greater Antillean Bullfinch Loxigilla violacea. These pretty birds are easy to find and to identify. They love feeders, and they are responsive to ‘pishing’, that irritating (?) noise that birders make to unseen avians in the coppice to persuade them to reveal themselves. Adult males are black with bright red accessories (hence “police bird”); females are paler with orangey accessories; and juveniles look a bit scruffy and patchy. Here’s a GAB gallery to enjoy.

Greater Antillean Bullfinch, Abaco (Alex Hughes) 4 Greater Antillean Bullfinch, Abaco (Alex Hughes) 5Greater Antillean Bullfinch immature with snail 2.Delphi Club.Abaco (Tom Sheley)Greater Antillean Bullfinch, Abaco (Keith Salvesen)Great Antillean Bullfinch, Abaco  (Tom Sheley) 1Great Antillean Bullfinch, Abaco (Charles Skinner)Great Antillean Bullfinch, Abaco (Gerlinde Taurer)GAB BH IMG_9208 copy 2

Credits: Erik Gauger (1); Alex Hughes (2, 3); Tom Sheley (4, 6); Keith Salvesen (5); Charles Skinner (7); Gerlinde Taurer (8); Bruce Hallett (9)

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BLACK-FACED GRASSQUITS ON ABACO

Black-faced Grassquit male, Abaco (Alex Hughes)

BLACK-FACED GRASSQUITS ON ABACO: AN UPGRADE…

Hi, human friends, I’m a black-faced grassquit Tiaris bicolor and I have a couple of observations to make on behalf of BFGS, if I may. First, we seem to be universally described as ‘common’, whereas we are actually quite refined in our behaviour. Secondly, the words most used to portray us are ‘dull’ and ‘drab’. And ‘stubby’. Well, excuse me… I – we – ask you to give us a second look.

black-faced-grassquit-adult-male-eating-berry-abaco-bahamas-tom-sheleyblack-faced-grassquit-foraging-berry-2-abaco-bahamas-tom-sheley

And I have some news for you. The perceptive classifications committee of the American Ornithological Union recently gave us an upgrade. That’s the way we see it anyway. For many years we have been classified under the heading Emberizidae. 

Black-faced Grassquit male, Abaco (Bruce Hallett)Black-faced Grassquit, Abaco (Tom Reed)

We kept company with buddies like the Greater Antillean Bullfinches, but also with a lot of New World sparrows, with whom we (frankly) never felt entirely comfortable. Too chirpy, for a start.

Black-faced Grassquit - Treasure Cay, Abaco (Becky Marvil)Black-faced Grassquit male, Abaco (Peter Mantle)

Last year, it became official. We are really a type of Tanager. They reckon we are closely related to Darwin’s finches (so, we are “common”, huh?). Now we get to be with other birds that are dome-nesters like us. And how about this – we’ll be in the same list as some really cool birds…

Black-faced Grassquit male, Abaco (Gerlinde Taurer)

How’s this for a colourful gang to be joining: scarlet tanager, summer tanager, rose-breasted grosbeak, indigo bunting, painted bunting – these are our new cousins. BFGs “dull” and “drab”? I don’t think so.

Black-faced Grassquit female, Abaco (Bruce Hallett)

6 UNDULL FACTS ABOUT BFGS

  • Make grassy dome-nests (like Bananaquits) and line them with soft grasses
  • Both sexes build the nest together
  • Both share egg-sitting duties and later chick-feeding & maintenance
  • Though quite gregarious by day, for some reason they tend to roost alone
  • They have a short ‘display’ flight with vibrating wings and a strange buzzing call
  • Otherwise, their flight is ‘weak, bouncy & fluttering’ (Whatbird’s assessment)

Black-faced Grassquit male, Abaco (Alex Hughes)

THE EVERYDAY TWITTERING SONG 

THE DISPLAY BUZZING SONG 

Black-faced Grassquit male, Abaco (Tom Reed)Black-faced Grassquit male, Abaco (Keith Salvesen)

STOP PRESS The day after I had pressed the ‘publish’ button on this post, I came across a great shot by Larry Towning of a BFG on Lubbers Quarters Cay, Abaco (think ‘Cracker P’s Restaurant’). An excellent addition of a bird from a small cay, showing its bright lower-wing flash.Black-faced Grassquit (m) Lubbers Quarters, Abaco (Larry Towning).jpg

Photo Credits: Alex Hughes (1, 10); Tom Sheley (2, 3); Bruce Hallett (4, 9); Tom Reed (5, 11); Becky Marvil (6); Peter Mantle (7); Gerlinde Taurer (8); Keith Salvesen (12) plus Larry Towning. Other Credits: ABA, AOU, Whatbird? (sound files)

RUDDY TURNSTONES AT DELPHI, ABACO BAHAMAS

RUDDY TURNSTONES ON THE BEACH IN ABACO

Ruddy Turnstones Arenaria interpres are well-known shore birds around the world. They used to be classified as plovers, but are now counted with sanderling. Fortunately they are distinctive enough not to be confusable with the many other species of shore bird with which they mix.Ruddy Turnstones at Delphi, Abaco 13

Their foraging methods are classified into 6 broad categories, though I imagine that if peckish, they may opt for all of these in the one feeding session.

  • Routing — rootling through piles of seaweed by flicking, ‘bulldozing’, and pecking it to expose small crustaceans or gastropod molluscs hidden underneath.
  • Turning stones — living up to its name name, flicking stones with its bill to uncover hidden snaily and shrimpy creatures.
  • Digging —  using small flicks of the bill to make holes in sand or mud and then gobbling up the prey revealed.
  • Probing — inserting the bill right into the ground to get at concealed gastropods.
  • Hammering — cracking open shells using the bill as a hammer, then winkling out the occupant. 
  • Surface pecking — short, shallow pecks to get at prey just below the surface of the sand.

Between them,  these turnstones seem to be using methods 1, 3, 4 and 6Ruddy Turnstones at Delphi, Abaco 2

This female bird has clearly dug down in the sand to the length of its billRuddy Turnstones at Delphi, Abaco 4

This male is digging deep…Ruddy Turnstones at Delphi, Abaco 1

When they are not actively feeding, turnstones enjoy group preening sessionsRuddy Turnstones at Delphi, Abaco 9

They are also very good at just standing around having a companionable chat…Ruddy Turnstones at Delphi, Abaco 6

…or a post-prandial snooze…Ruddy Turnstones at Delphi, Abaco 12

…or just enjoying the scenery in groups…Ruddy Turnstones at Delphi, Abaco 11

…or simply having a peaceful paddleRuddy Turnstones at Delphi, Abaco 16All photos by RH on the Delphi Club beach (where I’ve never seen one actually turn a stone)

AMERICAN OYSTERCATCHERS ON ABACO

American Oystercatcher.Delphi Club.Abaco Bahamas.Tom Sheley

AMERICAN OYSTERCATCHERS ON ABACO

The American Oystercatcher Haematopus palliatus is a familiar shorebird, with the significant advantage that it cannot be mistaken for any other shore species either to look at or to hear. Among all those little sandpipers and plovers, the handsome AMOY stands out from the crowd. 

Photos by Tom SheleyAmerican Oystercatcher.Delphi Club.Abaco Bahamas.Tom Sheley American Oystercatcher.Delphi Club.Abaco Bahamas.Tom Sheley

Photos by Bruce HallettAmerican Oystercatcher.Abaco Bahamas.Bruce HallettAmerican Oystercatcher.Abaco Bahamas.Bruce Hallett

Here are two recordings of oystercatchers, unmistakeable call sounds that will probably be instantly familiar.

Lopez Lanus / Xeno-Canto

Krzysztof Deoniziak / Xeno-Canto

I like the rather dishevelled appearance of this AMOY from Jim Todd, fly fisherman, author of ‘The Abaco Backcountry’, and intrepid kayak explorer around the coast of AbacoAmerican oystercatcher Abaco (Jim Todd)

Two photos taken on the Delphi beach by Charlie SkinnerAmerican Oystercatcher, Abaco (Charlie Skinner)American Oystercatcher, Abaco (Charlie Skinner)  A low ‘in-flight’ shot by Bruce HallettAmerican Oystercatcher.Abaco Bahamas.Bruce Hallett

This fine video from Audubon shows close-up views of the American Oystercatcher, and unleashes more of the distinctive call-sounds – an insistent wittering – of the species.

For some time, I found it difficult to distinguish American and Eurasian Oystercatchers. The markings of both species are variable according to gender, age, season and so on, but are generally very similar. Mrs RH noticed the salient difference at once – the eyes. The AMOY has bright orange eyes with red eye-rings; the EUROY’s eyes are the reverse colouring, as this example shows.

Eurasian Oystercatcher (spot the difference)Eurasian Oystercatcher. BBC

 Credits: Tom Sheley, Bruce Hallett, Jim Todd, Charlie Skinner, Xeno-Canto, Audubon, BBC

BLACK-NECKED STILTS

Black-necked Stilts, Abaco Bahamas (Keith Salvesen)

‘ON STILTS’: ELEGANCE ON TWO LEGS (OR JUST ONE)

There’s something wrong in the picture above. Count up how many pink legs you can see. It’s three between the two birds. I assumed of course that  ‘Oner’ had a perfectly good serviceable leg tucked up into its undercarriage. I admired the balancing skills involved in resting one leg while nonchalantly standing on the other.

We were watching this pair of black-necked stilts Himantopus mexicanus at the pond at Gilpin Point, which at certain times can be ‘Stilt Central’. These birds are permanent breeders on Abaco and are without a doubt the most beautiful of all the waders.

Black-necked Stilts, Abaco Bahamas (Keith Salvesen)
After 10 minutes observing this pair, there was no question about it – the right leg was completely and utterly missing. This had no obvious ill-effects on the bird – it was still able to throw a good pose (above) and to preen (below). And the other bird carried on as normal.
Black-necked Stilts, Abaco Bahamas (Keith Salvesen)
Black-necked Stilts, Abaco Bahamas (Keith Salvesen)
BNSs are territorial and in particular can become ‘proactive’ (ie aggressive) in protecting the area near a nest. I once mistakenly got close to a nest, not even knowing it was there. I soon learnt – a parent BNS came wading towards me, zigzagging in the water, shouting and carrying on in a way that immediately said ‘my nest is nearby’. And when I meanly stood my ground it suddenly took off and flew straight at my head…
A shouty stiltBlack-necked Stilts, Abaco Bahamas (Keith Salvesen)
Black-necked Stilts, Abaco Bahamas (Keith Salvesen)
All photos: Keith Salvesen / Rolling Harbour Abaco; Audio file Jim Holmes / Xeno Canto
Black-necked Stilts, Abaco Bahamas (Keith Salvesen)

KIRTLAND’S WARBLERS ON ABACO

Kirtland's Warbler, Abaco Bahamas (Bruce Hallett)

KIRTLAND’S WARBLERS ON ABACO

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“. 

Kirtland's Warbler, Abaco Bahamas (Bruce Hallett)

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.

Kirtland's Warbler, Abaco Bahamas (Bruce Hallett)

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)Kirtland's Warbler, 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 Kirtland's Warbler, Ohio (Tom Sheley)

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…).

Kirtland's Warbler, Abaco Bahamas (Rolling Harbour / KS)

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 Kirtland's Warbler, Abaco Bahamas (Woody Bracey)

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

Kirtland's Warbler, Abaco Bahamas (Tony Hepburn)

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.

Kirtland's Warbler, Abaco Bahamas (Woody Bracey)

WHO WAS MR KIRTLAND?

Jared Potter Kirtland (1793-1877) portrait

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.

**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). Special thanks for all use permissions for images of this rare bird.

WHITE-CHEEKED (BAHAMA) PINTAILS ON ABACO

White-cheeked (Bahamas) Pintail, Abaco (Keith Salvesen)

WHITE-CHEEKED (BAHAMA) PINTAILS ON ABACO

 

White-cheeked (Bahamas) Pintail, Abaco (Keith Salvesen)

The white-cheeked pintail Anas Bahamensis is also known as the Bahama Pintail. It is a gregarious species, often found in large numbers on lakes and ponds. An excellent place to see them on Abaco is at the pond by Hole 11 at Treasure Cay golf course. Don’t all rush at once – and if you do follow up the hint, check in  at the Clubhouse to get permission – there may be a competition in progress… You’ll see many other waterbird species there, and I will do a follow-up post about them. Do mind your head – if someone yells ‘fore’ they will probably not be counting duck species.White-cheeked (Bahamas) Pintail, Abaco (Keith Salvesen)

The male and female of the species are very similar. However, in the image below there’s one bird that stands out from the others… and I don’t mean the American Coot. Near the bottom right is a LEUCISTIC variant of the Bahama Duck, a genetic condition similar to albinism.White-cheeked (Bahamas) Pintail, Abaco (Keith Salvesen)

Here is a close-up of the same duck on dry land. These variants are known as Silver Bahama Pintails. They are worth more than the standard version. You can see some good comparative pictures and find out more at MALLARD LANE FARMS

White-cheeked (Bahamas) Pintail, Abaco (Keith Salvesen)

 Here is a more extreme wiki-example of a silver Bahama pintail
220px-White-cheeked_Pintail_white_morph_RWD

Another excellent place for pintails is the large pond at Gilpin Point near Crossing Rocks area of South Abaco. Strictly, it is on private land, but the owner Perry is happy to share the birds. There is a wonderful variety of waterbird life there. I have seen great egrets, tri-colored herons, little blue herons, yellow-crowned night herons, belted kingfishers and elegant BLACK-NECKED STILTS there, besides several duck species. I have also seen a sora there (twice), a small, furtive rail that skulks in the reeds and foliage at the edge of the water, profoundly hoping that you won’t notice it… If you are birding on Abaco from Delphi, ask Peter or Max for the location. Or else contact me.

White-cheeked (Bahamas) Pintail, Abaco (Keith Salvesen)

“On Reflection…”White-cheeked (Bahamas) Pintail, Abaco (Keith Salvesen)

All photos except wiki thumbnail: Keith Salvesen / Rolling Harbour