THE WORLD BIRDS - An Online Bird Book
Order Pelicaniformes
The
Pelicaniformes currently contain the pelicans (
Pelecanidae), herons (
Ardeidae), spoonbills and ibises (
Threskiornithidae), Hammerkop (
Scopidae), and shoebill (
Balaenicipitidae). This order may need to be separated into additional orders as the similarities of these families may be due to convergent evolution and not common ancestors.
Pelecanidae Family - Pelicans And Allies
The pelicans, which belong to the
Pelecanidae family, are large waterbirds found worldwide. They primarily inhabit warm regions. The diet of a Pelican consists mainly of fish. They often catch the fish by expanding the throat pouch which must be drained above the surface before they can swallow. They can cool themselves by panting and fluttering their pouch. Pelicans swim well with short, strong legs and feet that have four webbed toes. A layer of special fibers deep in the breast muscles can hold the wings rigidly horizontal for gliding and soaring.
There are eight species of pelicans. Some species catch fish while swimming, while others mainly catch fish by diving from their flights. The males are larger than the females, but they are not differentiated by their plumage. Some species are mainly white, while others are brown or grey. Some species nest on the ground, others in trees. The preference for ground or tree nesting is a function of species size – the larger ones preferring the ground.
Their dimensions range as follow: length 1.25 to 1.9 m (4.1 – 6.2 ft); wingspan 2.0 to 3.4 m ( 6.6 – 11.2 ft); weight 3.6 to 12 kg (7.9 – 26 lb).
Taxonomy
The
Pelecanidae family belongs to the Pelecaniformes order which also includes Ardeidae (herons and egrets) and Threskiornithidae (ibises and spoonbills). There are two other families: Balaenicipitidae (shoebill) and Scopidae (hamerkop). Each of these families only contains one species.
Etymology
The name pelican probably traces back to the ancient Greek eleka which referred to woodpeckers. Woodpeckers are notable for their chisel-like bills while pelicans are noted for their supersized bills.
Genus Pelecanus
Pelican,_American White Pelecanus erythrorhynchos
Image by: 1)
Alan D. Wilson - California 2)
Len Blumin - Miller, CA
3, 4) Dick- Ding Darling National Wildlife Refuge, Sanibel Island, Florida
Pelican,_Australian Pelecanus conspicillatus
Image by:
1, 2, 4) Dick Daniels - Australia 3)
Paul_Balfe
Pelican,_Brown Pelecanus occidentalis
Image by:
1, 2, 3, 4, 5, 6) Dick Daniels - the Carolinas
Image by: 1)
Sandy Cole - Florida 2)
Dick - Half Moon Bay, California 3)
Alan D Wilson- La Jolla, California
Image by:
1, 2) Dick - Panama 3)
Dick - Galapagos
Pelican,_Dalmatian Pelecanus crispus
Image by: 1)
Bhardwaj
Shanthanu - India 2)
Shizhao - Beijing zoo
3, 4) Dick Daniels - San Diego Zoo
Pelican,_Great White also
White Pelican also
Rosy Pelican Pelecanus onocrotalus
Image by: 1)
Dick Daniels - De Hoop, South AFrica
2, 3 Dick - Nepal
4) Dick -Kenya
Pelican,_Peruvian Pelecanus thagus
Image by:
1) Charlie Westerinen 2)
Alastair Rae 3)
Manuel Franco 4) Dick Daniels - Papudo. Chile
1) Juvenile
Pelican,_Pink-backed Pelecanus rufescens
Image by:
1) Dick - Jacksonville Zoo, Florida
2, 3, 4) Dick - Fish Eagle Lodge, Knysna Lagoon, Kenya
Pelican,_Spot-billed also
Gray Pelican Pelecanus philippensis
Image by:
1, 2) Lip Kee - Sri Lanka 3)
JM Garg - India 4)
Vijay Ismavel
1) Juvenile
Family Scopidae - 1 genus
It is a matter of debate whether the
Hammerkop belongs in the same order as Pelicans or the Storks.
Genus Scopus - 1 species
Hamerkop Scopus umbretta
Image: 1)
Dick Daniels - Tanzania
2)
Dick -
San Diego Zoo 3)
Sandy -
National Aviary 4) Dick - Nairobi National Park, Kenya
6) Hammerkop nest, perhaps the world's largest nest 9) Hamerkop warning about presence of lion
Family Balaenicipitidae - 1 genus
It is a matter of debate whether the
Shoebill belongs in the same order as Pelicans or the Storks.
Genus Balaeniceps - 1 species
Shoebill Balaeniceps rex
Image by: 1)
Darren Bellerby - Jurong Bird Park, Singapore
2) Charlie Westerinen - Prague Zoo 3)
Fritz Geller-Grimm -Zoological
Garden, Frankfurt/Main, Germany