GULL-BILLED TERNS

Gull-billed Tern, Abaco (Alex Hughes) 01

GULL-BILLED TERNS ON ABACO

The gull-billed tern Gelochelidon nilotica had a name upgrade from Sterna nilotica some years ago, and was awarded the honour of its own genus. Let’s be clear at the outset: there’s no such thing as a tern-billed gull, which slightly lessens the scope for species confusion. 

Gull-billed Tern, Abaco (Alex Hughes) 04

Gull-billed Tern, Abaco (Alex Hughes) 05

There are 12 species of tern recorded for Abaco. Only one, the royal tern, is a permanent resident. There is one winter resident, the Forster’s tern and there a 6 summer resident terns of varying degrees of commonness. The other four are transient or vagrant, and probably not worth making a special trip to Abaco to find. The GBT is designated SB3, a summer breeding resident that is generally uncommon, though might be more common in particular areas.

TERN TABLE**Tern Species Abaco**I know! Too tempting…

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Gull-billed Tern, Abaco (Alex Hughes) 11

The bird gets its name from it short, thick gull-like bill. It’s quite large in tern terms, with a wingspan that may reach 3 foot. They lose their smart black caps in winter.

Gull-billed Tern, Abaco (Alex Hughes) 03

There are 6 species of GBT worldwide, and it is found in every continent. While many terns plunge-dive for fish, the GBT mostly feeds on insects in flight, and will also go after birds eggs and chicks. Small mammals and amphibians are also on the menu.

Gull-billed Tern, Abaco (Alex Hughes) 06Gull-billed Tern, Abaco (Alex Hughes) 02

All photos were taken by Alex Hughes, a contributor to “THE BIRDS OF ABACO”, when he spent some time on Abaco a while back in connection with the conservation of the Abaco Parrot and the preservation of the habitat integrity of their nesting area in the Abaco National Park

Gull-billed Tern, Abaco (Alex Hughes) 12

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BLACK-FACED GRASSQUITS ON ABACO

Black-faced Grassquit male, Abaco (Alex Hughes)

Until 2016 the black-faced grassquit Tiaris bicolor was officially classified with other passerine emberizidae (e.g. antillean bullfinches & sundry New World sparrows).  The classifications committee of the American Ornithological Union recently moved them to join tanager-type species, specifically the dome-nesting ones. Now they are considered to be closely related to Darwin’s finches; and they join the broader category that includes tanagers, grosbeaks, and buntings. 

All photographs taken on Abaco, as credited below

black-faced-grassquit-adult-male-eating-berry-abaco-bahamas-tom-sheleyblack-faced-grassquit-foraging-berry-2-abaco-bahamas-tom-sheleyBlack-faced Grassquit male, Abaco (Bruce Hallett)

Black-faced Grassquit, Abaco (Tom Reed)Black-faced Grassquit - Treasure Cay, Abaco (Becky Marvil)Black-faced Grassquit male, Abaco (Peter Mantle)Black-faced Grassquit male, Abaco (Gerlinde Taurer)Black-faced Grassquit female, Abaco (Bruce Hallett)Black-faced Grassquit male, Abaco (Alex Hughes)

THE BFG EVERYDAY TWITTERING SONG 

THE BFG DISPLAY BUZZING SONG 

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

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); Whatbird? (sound files)

AMERICAN KESTRELS ON ABACO

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As many or most of the images show, utility wires (also posts) are a favourite perch for kestrels. They get an unimpeded view of the only thing that really matters in their lives – outside the breeding season, of course – PREY. 

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In my experience it’s quite rare to see AMKEs on the ground – unless they are in the act of ripping up some hapless rodent pinned to the earth. I was with photographer Tom Sheley when he captured this fine bird in the grass. 

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Tom also took this outstanding photo, on an overcast day, of a kestrel feeding its fledgeling a large insect.american-kestrel-feeding-fledgling-2-delphi-club-abaco-bahamas-tom-sheley

An AMKE at Treasure Cayamerican-kestrel-treasure-cay-abaco-bahamas-6-13-tom-sheley

A richly-coloured specimenAMERICAN KESTREL, Abaco -Nina Henry

A kestrel in streamlined flight, with its feet tucked tightly under its bodyamerican-kestrel-abaco-tom-reed

Bird on the Wireamerican-kestrel-abaco-peter-mantle-copyamerican-kestrel-abaco-1

Credits: Bruce Hallett (1, 11); Charles Skinner (2); Peter Mantle (3, 9); Tom Sheley 4, 5, 6); Nina Henry (7); Keith Salvesen (10); Tom Reed (8)

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MAGNIFICENT FRIGATEBIRDS aka MAN-O-WAR BIRDS

Magnificent Frigatebirds (m) - Michael Vaughn

You can read about Fregata magnificens and their courtship displays, gular pouches, nesting habits, names, uses to mankind (if any), and 10 magnificent facts about them at my Rolling Harbour site HERE. These birds are sky-pirates, stealing fish in the air from other birds. Tropicbirds are a particular target. They catch fish and keep them in their gullets as they fly back to the nest to feed their young. The frigatebirds will swoop on them, catch them by the leg and hold them upside-down until they regurgitate the fish. Often the frigate bird will manage to release the tropicbird and dive to catch the fish before it hits the water.

     CLICK LOGO TO VIEW A BBC / DAVID ATTENBOROUGH CLIP OF AN AERIAL ROBBERY magnificent-frigatebird

Film clip: Female FB has TB by the leg & shakes it until the fish  (circled) drops outMagnificent Frigatebird steals fish from Tropicbird (BBC clip)

A MAN-O-WAR GALLERY

A male in flight (a most unusual shot, taken from above)Magnificent Frigatebird (m) - Michael Vaughn

Juveniles being delinquentMagnificent Frigatebirds (juv) - Michael Vaughn

A female in flight: the white front is the invariable distinguishing featureMagnificent Frigatebird (f) - Michael Vaughn

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10 FACTS ABOUT FRIGATEBIRDS

  • The largest of several frigatebird species around the world
  • Found in tropical and subtropical waters
  • Females have white fronts – easily distinguishable from males in flight
  • Adult wingspan is 7+ feet = largest wing-area / bodyweight ratio of any bird
  • Can remain in flight and far out to sea for many days
  • KLEPTOPARASITES – will rob other seabirds of their food
  • Diet: mainly fish & squid from the water’s surface; seabird chicks
  • Nest in colonies, producing a single egg every other season
  • Don’t land on water, as they can’t float; and feeble at walking on land
  • One of the earliest depictions of a frigatebird is by Eleazar Albin in 1737. He was a naturalist contemporary of MARK CATESBY & pre-dated AUDUBON

Magnificent Frigatebird (m) - Michael Vaughn

Credits: Michael Vaughn for all photos; Birdorable cartoon; TV CLIP bbc.co.uk  © copyright 2009 BBC

Magnificent Frigatebird (m) - Michael Vaughn

TRICOLORED HERONS

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TRICOLORED HERON: AN ELEGANT & PATIENT FISHER

The Tricolored Heron Egretta tricolor is one of 6 heron species found on Abaco, and is a permanent breeding resident. To which can be added 4 sorts of egret to complete a line up of expert fishers, all equally at home hunting in the water or from the shore, or surveying the scene from nearby vantage points like bushes and trees. A long neck, a long bill and long legs make this heron species ideally adapted for wading. Like other herons and egrets, it will stand stock-still waiting for the perfect fish to swim into range. However they are also active hunters, and will stalk prey or chase it by striding quickly through the water in pursuit. They eat fish, crustaceans, reptiles, and insects.

tricolored_heron2_by_dan_pancamo (Wiki)
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The heron and egret species of Abacoherons-egrets-abaco

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Breeding plumage: smart blue bill and a fish to put in itTri-colored Heron with fish (Phil Lanoue)

Credits: Phil Lanoue (1, 7); Dan Pancamo (2); Keith Salvesen (3); Woody Bracey (4); Bruce Hallett (5)

THE OSPREY: “ABACO’S GOT TALONS”

Osprey, Abaco (Jim Todd 2)

“ABACO’S GOT TALONS”: THE OSPREY

The magnificent Osprey Pandion haliaetus is one of the world’s most successful raptors and can be found on every continent except Antarctica.

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Osprey, Abaco Bahamas (Tom Sheley)

On Abaco the Osprey is a permanent breeding resident, and while certainly not an ‘every day bird’, the chances of seeing one are reasonable. They are fairly often seen flying over the bay at Delphi, or out on the Marls. A pair recently nested at Sandy Point close to Nancy’s restaurant.

Ospreys, Abaco (Jim Todd)

There are few more exhilarating sights in the world of birds than an osprey swooping from a great height into the sea, emerging with a large fish held characteristically ‘fore and aft’ in its talons, and flying into the distance with heavy wing-beats. This wonderful close-up by wildlife photographer PHIL LANOUE shows an osprey that has actually managed to grab dinner for two…

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This bird looks as if it is poised to dive onto some hapless fishOsprey in flight (Lake Wylie, S Carolina) - Gareth Rasberry

 10 PANDION POINTS TO PONDER

  • Ospreys are also known as sea hawks, fish hawks or fish eagles. They are almost exclusively fish-eating
  • A mature adult’s wingspan may reach 6 feet
  • They are the only members of their taxonomic family, genus and species
  • Ospreys & owls are the only raptors with reversible outer toes to grasp prey firmly
  • They can carry fish weighing more than 4 lbs
  • They dive into water feet first to grab its prey; their nostrils can close up to keep out water
  • Osprey-watch.org is a global site for mapping osprey nest locations / logging nesting observations
  • A New Jersey group has designed the optimum artificial nest platform, now an accepted standard
  • Ospreys usually mate for life
  • Osprey populations in many areas have been affected by pesticides and by egg trophy-hunters

PUTTING THE ‘PREY’ INTO ‘OSPREY’
Osprey, Florida (Danny Sauvageau)

A utility post makes a perfect perch for a bonefish snackOsprey, Abaco (Woody Bracey) copy

CHECK OUT THE TALON…Osprey (Danny Sauvageau)

The impressive wingspan of an Abaco ospreyOsprey, Abaco (Craig Nash) copy

An osprey far out on the Marls. I managed to get some distance shots of it despite having a fishing rod in my hand…Osprey - Abaco Marls 4Osprey - Abaco Marls 1Osprey - Abaco Marls 2Osprey - Abaco Marls 3

Osprey, by John James AudubonOsprey - John James Audubon

The Osprey is a prolific symbol in national, cultural and sporting themes, and has been depicted on Bahamas stamps. And quite right too.

Bahamas Wildlife Stamp Osprey copy

Wm Shakespeare Coriolanus

I think he [Coriolanus] will be to Rome
As is the osprey to the fish, who takes it
By sovereignty of nature… 

Credits: Jim Todd (1, 3), Tom Sheley (2), Phil Lanoue (4), Gareth Rasberry / Wiki (5), Danny Sauvageau (6, 8), Woody Bracey (7), Craig Nash (9), RH (Marls pics) – thanks for all image use permissions