Members of the Threskiornithida family have long necks and legs. The bill is also long, curved downward in the case of the ibises, straight and flattened in the spoonbills. They fly with their necks and legs extended. They are strong fliers and can conserve energy by soaring. They lack a true voice-producing mechanism and is silent except for occassional grunt like sounds. They are found throughout much of the world, often by water but also in dry areas.
The sexes are similar in appearance, but males average larger than females. They are large birds, but mid-sized by the standards of their order. The smallest of the family, the dwarf olive ibis, is 45 cm (18 in) long and weighs 450 g (0.99 lb),. The largest, the giant ibis, 100 cm (39 in) long and weights 4.2 kg (9.3 lb) .
They feed on of invertebrates and small vertebrates. Ibises hunt by probing in soft earth or mud, spoonbills by swinging the bill from side to side in shallow water. Ibises have sensory pits around the tips of their bills, enabling them to locate insects and earthworms. At night, they roost in trees near water. They are gregarious, feeding, roosting, and flying together, often in formation.
Most
ibises are colonial nesters, while spoonbills nest singularly or in small groups. The nests are created out of reeds and sticks and located in trees. The male brings the material to the female which builds the nest. Both sexes take part in incubating the eggs and later feeding the chicks.
Taxonomy
In the 1990s, the ibis and spoonbill family was considered to belong to the same order as the storks, Ciconiiformes. DNA evidence currently implies that Threskiornithida should beloing to the same order as the pelicans. There are 13 ibis genera and only one spoonbill genus.
Etymology
The name Threskiornithidae comes from the greek for “sacred bird”. In fact, the ibis species Threskiornis aethiopicus is called the sacred ibis. That name goes back to ancient Egyptian religions, so Egypt also has a claim for the root of the family name
Genus Bostrychia
Ibis,_Hadada Bostrychia hagedash
Image by: 1)
Cristiano Crolle - South Africa
2, 3,Dick Daniels - South Africa 4)
Dick - Tanzania
5)
Dick -
National Aviary 6)
Dick - Kenya
Ibis,_Olive Bostrychia olivacea
Image by:
1)
Merrittimages 2)
Michal Porebiak - Ethiopia
1) Juvenile
Ibis,_Sao_Tome Bostrychia bocagei
Image by:
1, 2) Nik_Borrow
Ibis,_Spot-breasted Bostrychia rara
Image by: 1)
Kani
Ibis,_Wattled Bostrychia carunculata
Image by:
1, 2) Colleen Taugher 3)
Veli
4)
Nik_Borrow - Ethiopia
Genus Cercibis - 1 species
Ibis,_Sharp-tailed Cercibis oxycerca
Image by: 1)
Miguel Jacques 2)
Barloventomagico - Venezuela 3)
Cornell_Univ's_Neotropical_Birds_Online - Carlos_Siegert in Venezuela
Genus Eudocimus
These ibis forage by probing with their long, down-curved beaks. Eats fish, frogs, crustaceans and insects. Flies with neck and legs outstretched, often in long, loose lines, especially on their way to or from the night-time roosts.
Ibis,_Scarlet Eudocimus ruber
Image by: 1)
Casliber 2)
Dick -
Birds of Eden 4, 5) Dick Daniels -
Sylvan Heights 3, 6) Sandy Cole -
Birds of Eden, South Africa 7)
Gabriel_Caparó
1) Range (orange) 2, 3) Juvenile
Ibis,_White also
American White Ibis Eudocimus albus
Image by: 1)
Casliber 2, 3, 6, 7)
Dick Daniels in North Carolina
5, 8, 9) Dick - Florida 4)
Alan D. Wilson - South Padre Island,
Texas
1) Range (blue) 2, 3, 4) Juvenile
Genus Geronticus
The bald ibis have blad heads which gives them a vulture like appearance. They also differ from other ibis by breeding on cliffs rather than trees and preferring arid locations to wetlands.
Geronticus is derived from the Greek work for “old man”, which refers to the bald head of the species.
Ibis,_Northen Bald also
Waldrapp Geronticus eremita
Image by: 1, 2)
Agustin Povedano - Spain 3)
Dezidor 4)
Cristiano Crolle - Northern Italy
Ibis,_Southern Bald Geronticus calvus
Image by: 1)
Sarefo - Cologne Zoo,
Germany
2, 3) Dick Daniels - Tampa's Lowry Park Zoo
4, 5) Dick - San Diego Zoo 6)
Sandy Cole - San Diego Zoo
Genus Lophotibis- 1 species
Ibis,_Madagascar Lophotibis cristata Found:
Image by: 1)
Eric Savage at the Bronx Zoo, USA 2)
Joe
- Bronx Zoo
3, 4) Dick Daniels - San Diego Zoo
Genus Mesembrinibis - 1 species
Ibis,_Green Mesembrinibis cayennensis
Image by: 1)
Dario Sanches -
Brazil 2)
Claudio Timm 3)
Blake Matheson 4)
Alastair Rae
Genus Nipponia
Ibis,_Crested Nipponia nippon
Image by: 1)
Hisagi 2)
Ken 3)
Danielinblue
Genus Phimosus - 1 species
Ibis,_Bare-faced Phimosus infuscatus
Image by:
1, 2) Cláudio Timm in Rio Grande do Sul, Brazil 3)
Gustavo Duran 4)
Barloventomagico - Venezuela
Genus Platalea
Spoonbill, African Platalea alba
Image by: 1)
Dick Daniels - St. Lucia, South Africa 2)
Dick - San Diego Zoo
3)
Dick -
Birds of Eden, South Africa 4)
Charlie Westerinen - Zimbabwe 5)
Nik_Borrow - Uganda
Spoonbill, Black-faced Platalea minor
Image by: 1)
Charles Lam 2)
Darren Bellerby - Hong Kong Wetland Park, Hong Kong 3)
Cp9asngf
Spoonbill, Eurasian also
Common Spoonbill Platalea leucorodia
Image by: 1)
Creando 2)
Bhardwaj Shanthanu - India 3)
Iacopo
lea - Italy 4)
Andreas Trepte 5)
Cristiano Crolle - Texel, Holland
Spoonbill, Roseate Platalea ajaja also
Ajaia ajaja Found
Image by:
1, 3) Dick Daniels - Ding Darling National Wildlife Refuge, Sanibel Island, Florida
2)
Sandy Cole -
Flamingo
Gardens, Flroida 4)
Sandy Cole -
Sylvan Heights 5)
Dick - San Francisco Zoo 6)
Dick - San Diego Zoo 7)
Dick -
National Aviary 8)
Dominic Sherony
Spoonbill, Royal also
Black-billed Spoonbill Platalea regia
Image by:
1, 3, 4) Dick Daniels - Australia 2)
Dick - Australia
Spoonbill, Yellow-billed Platalea flavipes
Image by: 1)
Petr Baum - Zoo in Healesville, Victoria
2,
3) Sandy
Cole - San Diego Zoo 4)
patrick kavanagh
Genus Plegadis
The
Plegadis genus is probably most closely related to the
Eudocimus genus.
Eudocimus is the older lineage.
Ibis,_Glossy Plegadis falcinellus Found
Image by:
1, 2) Dick Daniels-
Flamingo Gardens, Florida 3) Sylvan de Munck 4)
Mehmet Karatay 5)
Agustin_Povedano 6) )
Dick - Venice, Florida 7)
Alan D. Wilson - California
Ibis,_Puna Plegadis ridgwayi Found: Argentina, Bolivia, Chile, Peru
Image by: 1)
Thomas Quine 2)
Francesco_Veronesi Dick Daniels - Urubamba, Peru 3)
Dick - Andes of Peru
Ibis,_White-faced Plegadis chihi
Image by:
1, 4, 5 Cláudio Timm - Brazil 2)
Dan Pancamo - Texas 3)
Kevin Cole along the Pacific Coast, USA
6)
Alan D. Wilson - near Burns, Oregon 7)
nebirdsplus - Massachusetts
1) Juvenile 2 - 5) Nonbreeding 6, 7) Breeding
Genus Pseudibis
Ibis,_Giant Pseudibis gigantea Spmetimes placed in its on genus
Thaumatibis gigantea
Image by: 1)
Chaiyan_Kasorndorkbua 2)
James_Eaton
Ibis,_White-shouldered Pseudibis davisoni Found: SW China to Myanmar, peninsular Thailand and Indochina
Image by: 1)
David_Cook - Cambocia
Genus Pseudibis
Southeast Asian Ibis
Ibis,_Red-naped also
Black Ibis Pseudibis papillosa
Image by: 1)
J M Garg in Haryana, India 2)
Joby Joseph - India 3)
Niraj Mistry 4)
Jan Arendtsz 5)
Charlene Wood
Genus Theristicus
Found in open, grassy habitats in South America. All have a long, decurved dark bill, relatively short reddish legs that do no extend beyond the tail in flight, at least the back is gray.
Ibis,_Black-faced Theristicus melanopis Found
southern South America
Image by: 1)
dFaulder at Puerto Montt, Chile
2, 3, 5) Cláudio
Timm Calafate, Argentina 4)
Dick Daniels - Andes of Peru
1) Juvenile 2, 3, 4) Nonbreeding 5) Breeding 4) Andean subspecies also known as Andean Ibis
Ibis,_Buff-necked also
White-throated Ibis Theristicus caudatus
Image by:
1, 2) Claudio Timm - Brazil 3)
Dario Sanches 4)
Fabio Meffei
Ibis,_Plumbeous Theristicus caerulescens
Image by: 1)
Dario Niz - Uruguay
2, 3)
Cláudio
Timm in Rio Grande do Sul, Brazil 4)
Bernard_Dupont - Brazil
Genus Threskiornis
They occur in the warmer parts of the Old World in southern Asia, Australasia and sub-Saharan Africa.
Ibis,_Australian White Threskiornis molucca Found: Australia
Image by:
1, 2, 3) Dick Daniels - Australia
Ibis,_Black-headed Threskiornis melanocephalus Found: south Asia, India, Japan
Image by: 1)
Allan Hopkins 2, 5) Vijay Ismavel 3)
Ravi Vaidyanathan 4)
J M Garg
1) Juvenile
Ibis,_Sacred Threskiornis aethiopicus Also known as African Sacred Ibis
Image by: 1)
Dick Daniels - Flamingos Wildlife Reserve in Las Vegas. 2)
Dick -
World of Birds, South Africa
3) Charlie Westerinen - the Okavango Delta in Botswana
4, 5) Dick - Fish Eagle Lodge, Knysna Lagoon, Kenya
6)
Joseph Mochoge - Gilgil, Kenya 7)
Cristiano Crolle - near Novara, Italy
Ibis,_Straw-necked Threskiornis spinicollis Found: Australia, New Guinea
Image by: 1)
Cyron Ray Macey 2) Dick Daniels - Australia
3)
JJ Harrison - Australia 4)
Laurie_Boyle 5
) Charlie Westerinen - Goulburn Australia