The roseate spoonbill (''Platalea ajaja'') is a gregarious wading bird of the

ibis The ibises () (collective plural ibis; classical plurals ibides and ibes) are a group of long-legged wading birds in the family Threskiornithidae, that inhabit wetlands, forests and plains. "Ibis" derives from the Latin and Ancient Greek word ...

and

spoonbill Spoonbills are a genus, ''Platalea'', of large, long-legged wading birds. The spoonbills have a global distribution, being found on every continent except Antarctica. The genus name ''Platalea'' derives from Ancient Greek and means "broad", refe ...

family,

Threskiornithidae The family Threskiornithidae includes 36 species of large wading birds. The family has been traditionally classified into two subfamilies, the ibises and the spoonbills; however recent genetic studies have cast doubt on this arrangement, and ha ...

. It is a resident breeder in both South and North America.

Taxonomy

The roseate spoonbill is sometimes placed in its own genus - ''Ajaia''. A 2010 study of

mitochondrial DNA Mitochondrial DNA (mtDNA or mDNA) is the DNA located in mitochondria, cellular organelles within eukaryotic cells that convert chemical energy from food into a form that cells can use, such as adenosine triphosphate (ATP). Mitochondrial D ...

of the spoonbills by Chesser and colleagues found that the roseate and yellow-billed spoonbills were each other's closest relatives, and the two were descended from an early offshoot from the ancestors of the other four spoonbill species. They felt the genetic evidence meant it was equally valid to consider all six to be classified within the genus ''

Platalea Spoonbills are a genus, ''Platalea'', of large, long-legged wading birds. The spoonbills have a global distribution, being found on every continent except Antarctica. The genus name ''Platalea'' derives from Ancient Greek and means "broad", re ...

'' or alternatively the two placed in the

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispe ...

genera ''Platibis'' and ''Ajaia'', respectively. However, as the six species were so similar morphologically, keeping them within the one genus made more sense.

Description

The roseate spoonbill is long, with a wingspan and a body mass of . The tarsus measures , the culmen measures and the wing measures and thus the legs, bill, neck and spatulate

bill Bill(s) may refer to: Common meanings * Banknote, paper cash (especially in the United States) * Bill (law), a proposed law put before a legislature * Invoice, commercial document issued by a seller to a buyer * Bill, a bird or animal's beak Pla ...

all appear elongated. Adults have a bare greenish head ("golden buff" when breeding) and a white neck, back and breast (with a tuft of pink feathers in the center when breeding), and are otherwise a deep pink. The bill is grey. There is no significant

sexual dimorphism Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most an ...

Like the

American flamingo The American flamingo (''Phoenicopterus ruber'') is a large species of flamingo closely related to the greater flamingo and Chilean flamingo native to the Neotropics. It was formerly considered conspecific with the greater flamingo, but that tre ...

, their pink colour is diet-derived, consisting of the

carotenoid Carotenoids (), also called tetraterpenoids, are yellow, orange, and red organic pigments that are produced by plants and algae, as well as several bacteria, and fungi. Carotenoids give the characteristic color to pumpkins, carrots, parsnips, ...

pigment

canthaxanthin Canthaxanthin is a keto-carotenoid pigment widely distributed in nature. Carotenoids belong to a larger class of phytochemicals known as terpenoids. The chemical formula of canthaxanthin is C40H52O2. It was first isolated in edible mushrooms. It ...

. Another carotenoid,

astaxanthin Astaxanthin is a keto-carotenoid within a group of chemical compounds known as terpenes. Astaxanthin is a metabolite of zeaxanthin and canthaxanthin, containing both hydroxyl and ketone functional groups. It is a lipid-soluble pigment with red ...

, can also be found deposited in

flight Flight or flying is the process by which an object moves through a space without contacting any planetary surface, either within an atmosphere (i.e. air flight or aviation) or through the vacuum of outer space (i.e. spaceflight). This can be a ...

and body feathers.Brush, A. H. 1990. Metabolism of cartenoid pigments in birds. ''

The FASEB Journal ''The FASEB Journal'' is a scientific journal In academic publishing, a scientific journal is a periodical publication intended to further the progress of science, usually by reporting new research. Content Articles in scientific journals ...

''. 4:2969-2977.
Fox, D. L. 1962. Carotenoids of the Roseate Spoonbill. ''Comparative Biochemistry and Physiology'' 6:305-310.
(Mentioned in th
Cornell Lab of Ornithology page
. The colors can range from pale pink to bright magenta, depending on age, whether breeding or not, and location. Unlike

heron The herons are long-legged, long-necked, freshwater and coastal birds in the family Ardeidae, with 72 recognised species, some of which are referred to as egrets or bitterns rather than herons. Members of the genera ''Botaurus'' and ''Ixobrychu ...

s, spoonbills fly with their necks outstretched. They alternate groups of stiff, shallow wingbeats with glides.

Distribution

The species occurs in South America mostly east of the

Andes The Andes, Andes Mountains or Andean Mountains (; ) are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is long, wide (widest between 18°S – 20°S ...

, and in coastal regions of the

Caribbean The Caribbean (, ) ( es, El Caribe; french: la Caraïbe; ht, Karayib; nl, De Caraïben) is a region of the Americas that consists of the Caribbean Sea, its islands (some surrounded by the Caribbean Sea and some bordering both the Caribbean ...

Central America Central America ( es, América Central or ) is a subregion of the Americas. Its boundaries are defined as bordering the United States to the north, Colombia to the south, the Caribbean Sea to the east, and the Pacific Ocean to the west. ...

Mexico Mexico (Spanish language, Spanish: México), officially the United Mexican States, is a List of sovereign states, country in the southern portion of North America. It is borders of Mexico, bordered to the north by the United States; to the so ...

, and the

Gulf Coast of the United States The Gulf Coast of the United States, also known as the Gulf South, is the coastline along the Southern United States where they meet the Gulf of Mexico. The coastal states that have a shoreline on the Gulf of Mexico are Texas, Louisiana, Missi ...

,Dumas, Jeannette V. 2000
Roseate Spoonbill (''Platalea ajaja'')
The Birds of North America Online (A. Poole, Ed.). Ithaca: Cornell Lab of Ornithology. Retrieved 2009-11-12. and from central Florida's Atlantic coast at Merritt Island National Wildlife Refuge, adjoined with

NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedin ...

Kennedy Space Center The John F. Kennedy Space Center (KSC, originally known as the NASA Launch Operations Center), located on Merritt Island, Florida, is one of the National Aeronautics and Space Administration's (NASA) ten field centers. Since December 196 ...

at least as far north as South Carolina's Myrtle Beach. In the summer of 2021, sightings of the bird were reported well outside its typical range, including in Washington, D.C.,

upstate New York Upstate New York is a geographic region consisting of the area of New York (state), New York State that lies north and northwest of the New York metropolitan area, New York City metropolitan area. Although the precise boundary is debated, Upsta ...

, and even

New Hampshire New Hampshire is a U.S. state, state in the New England region of the northeastern United States. It is bordered by Massachusetts to the south, Vermont to the west, Maine and the Gulf of Maine to the east, and the Canadian province of Quebec t ...

. A large flock was spotted in

Huntley Meadows Park Huntley Meadows Park, the largest park operated by the Fairfax County Park Authority (), is located in the Hybla Valley area of Fairfax County, Virginia, south of the city of Alexandria. The park features a visitor center, a beaver-created wetla ...

Fairfax County, Virginia Fairfax County, officially the County of Fairfax, is a county in the Commonwealth of Virginia. It is part of Northern Virginia and borders both the city of Alexandria and Arlington County and forms part of the suburban ring of Washington, D. ...

, drawing a large crowd of spectators.

Behavior

This species feeds in shallow fresh or coastal waters by swinging its bill from side to side as it steadily walks through the water, often in groups. The spoon-shaped bill allows it to sift easily through mud. It feeds on

crustacean Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapoda, decapods, ostracoda, seed shrimp, branchiopoda, branchiopods, argulidae, fish lice, krill, remipedes, isopoda, isopods, barnacles, copepods, ...

s, aquatic insects, frogs,

newt A newt is a salamander in the subfamily Pleurodelinae. The terrestrial juvenile phase is called an eft. Unlike other members of the family Salamandridae, newts are semiaquatic, alternating between aquatic and terrestrial habitats. Not all aqua ...

s and very small fish ignored by larger waders. In the United States, a popular place to observe roseate spoonbills is "Ding" Darling National Wildlife Refuge in Florida. Roseate spoonbills must compete for food with

snowy egret The snowy egret (''Egretta thula'') is a small white heron. The genus name comes from Provençal French for the little egret, , which is a diminutive of , 'heron'. The species name ''thula'' is the Araucano term for the black-necked swan, a ...

great egret The great egret (''Ardea alba''), also known as the common egret, large egret, or (in the Old World) great white egret or great white heron is a large, widely distributed egret. The four subspecies are found in Asia, Africa, the Americas, an ...

s, tricolored herons and

American white pelican The American white pelican (''Pelecanus erythrorhynchos'') is a large Aquatic animal, aquatic soaring bird from the order (biology), order Pelecaniformes. It breeds in interior North America, moving south and to the coasts, as far as Central Amer ...

s. Roseate spoonbill (Ajaia ajaja) in flight composite.jpg, In flight in the

Pantanal The Pantanal () is a natural region encompassing the world's largest tropical wetland area, and the world's largest flooded grasslands. It is located mostly within the Brazilian state of Mato Grosso do Sul, but it extends into Mato Grosso and ...

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

(composite image) Roseate Spoonbill by Dan Pancamo1.jpg, On

High Island, Texas High Island is an unincorporated community located in the Bolivar Peninsula census-designated place, Galveston County, Texas, United States. The community is located in the extreme eastern part of the county on Bolivar Peninsula, less than one mi ...

, United States Roze Lepelaar.jpg, At GaiaZoo,

Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...

Merritt island-0480.jpg, Foraging roseate spoonbills at Merritt Island, Florida United States Roseate Spoonbill feeding with Northern Shovellors, Merritt Island.ogv, Video of feeding behavior, Merritt Island, Florida United States 2019-02-15 074 Roseate spoonbill (Platalea ajaja) at Sian Ka'an Biosphere Reserve, Mexico.jpg, Roseate spoonbill at

Sian Ka'an Biosphere Reserve Sian or Siyan may refer to: __NOTOC__ People *Siân, a Welsh girl's name; list of people with this name Places *Sian, Iran (disambiguation), various places in Iran *Sian, Russia, a rural locality in Amur Oblast, Russia *Xi'an, China, formerly roman ...

, Mexico

Breeding

The roseate spoonbill nests in

shrub A shrub (often also called a bush) is a small-to-medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from tree ...

s or trees, often

mangrove A mangrove is a shrub or tree that grows in coastal saline or brackish water. The term is also used for tropical coastal vegetation consisting of such species. Mangroves are taxonomically diverse, as a result of convergent evolution in severa ...

s, laying two to five eggs, which are whitish with brown markings. Immature birds have white, feathered heads, and the pink of the

plumage Plumage ( "feather") is a layer of feathers that covers a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage differ between species and subspecies and may vary with age classes. Within species, ...

is paler. The bill is yellowish or pinkish. Platalea ajaja -parent and two chicks on nest-8a.jpg, Adult with two juveniles on a nest

Conservation and threats

Information about

predation Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill ...

on adults is lacking. Nestlings are sometimes killed by

turkey vulture The turkey vulture (''Cathartes aura'') is the most widespread of the New World vultures. One of three species in the genus '' Cathartes'' of the family Cathartidae, the turkey vulture ranges from southern Canada to the southernmost tip of So ...

bald eagle The bald eagle (''Haliaeetus leucocephalus'') is a bird of prey found in North America. A sea eagle, it has two known subspecies and forms a species pair with the white-tailed eagle (''Haliaeetus albicilla''), which occupies the same niche as ...

raccoon The raccoon ( or , ''Procyon lotor''), sometimes called the common raccoon to distinguish it from other species, is a mammal native to North America. It is the largest of the procyonid family, having a body length of , and a body weight of ...

s and fire ants. In 2022, an 18-year-old banded bird was discovered, making it the oldest known wild individual.

References

External links

Field guide on Flickr
* * *

– Cornell Lab of Ornithology * {{Taxonbar, from=Q389664 roseate spoonbill Native birds of the Southeastern United States Birds of the Caribbean Birds of the Dominican Republic Birds of South America Wading birds roseate spoonbill roseate spoonbill Articles containing video clips Extant Late Pleistocene first appearances