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Bird name:

Royal Tern

Sterna maximaOrder: CHARADRIIFORMES Family: Skuas, Gulls, Terns, Skimmers (Laridae)
Codes: Common Name: ROYT Scientific Name: THAMAX ITIS Taxonomic No.: 176922
Least Concern
 
Royal Tern:  The breeding adult Royal Tern has pale gray upperparts and white face, neck, and underparts. Head has spiky, black crest and cap, and heavy, bright orange bill. Wings are black-tipped above and black-edged below; tail is deeply forked. Legs and feet are black.
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Overview

Royal Tern: Large tern, pale gray upperparts; white face, neck, and underparts. Head has spiky, black crest and cap, and heavy, bright orange bill. Wings are black-tipped above and black-edged below; tail is deeply forked. Legs and feet are black. Hovers before plunge diving for prey.

Range and Habitat

Royal Tern: Breeds along coast from Maryland to Texas, wandering further south in summer. Spends winters from North Carolina and California southward. Prefers saltwater habitats such as coastal areas, beaches, bays, offshore areas; rarely found inland.

Topo Map: Gull-like Body


Listen to Call

Voice Text

"kee-rare"

Interesting Facts

 Royal Terns defecate directly on the rim of their nest, perhaps to reinforce the nest against flooding. After a few weeks, the nest rim hardens.

 The chicks leave the nest scrape within one day after hatching and congregate together in a group known as a crèche, which can have thousands of chicks. A pair will feed only their own chick, and manage to find it in the crowd, probably by recognizing its call.

 They feed primarily on fish rather than crab, more than any other tern. The offering of fish by the male to the female is part of the courtship display.

 A group of royal terns are collectively known as a "highness" of terns.


Bird Term Glossary



Author

Gary Owen Dick

Artist

Yury Lisyak

Splitbar
Range Map for Royal Tern

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Family Tern (Laridae)_blue
Species Sterna maxima
Length18 - 21 Inches
Wingspan43 Inches

Royal Tern

Royal Tern: Large tern, pale gray upperparts; white face, neck, and underparts. Head has spiky, black crest and cap, and heavy, bright orange bill. Wings are black-tipped above and black-edged below; tail is deeply forked. Legs and feet are black. Hovers before plunge diving for prey.

● Song: "kee-rare"

● Foraging & Feeding: Royal Tern: Feeds on small fish and aquatic invertebrates, including crabs, squid, and shrimp. Plunge dives to capture prey; occasionally pirates fish from other birds, especially Brown Pelicans.

● Breeding & nesting: Royal Tern: One to four creamy buff to brown eggs with red brown markings are laid in a depression in sand or a cup of dead grass, usually built on a sandy or rocky island. Incubation ranges from 20 to 31 days and is carried out by both parents.

● Similar species: Royal Tern: Elegant Tern is smaller, has a more slender red-orange bill that appears slightly drooped at tip, and longer shaggy crest that extends down nape. Caspian Tern has a thicker, red bill, dark wedge on outer portion of underwings, weaker forked tail, and near complete cap in winter and juvenile plumages.

Flight Pattern

Direct flight with deep steady wing beats.
Royal Tern Breeding Adult Body Illustration
● Range & Habitat: Royal Tern: Breeds along coast from Maryland to Texas, wandering further south in summer. Spends winters from North Carolina and California southward. Prefers saltwater habitats such as coastal areas, beaches, bays, offshore areas; rarely found inland.
BreedingMonogamous, Colonial
PopulationFairly common, Declining
MigrationMigratory
Weight16 Ounces
Gull-like BodyX
UnderpartsX
Belly, undertail coverts, chest, flanks, and foreneck.
CapX
The area on top of the head of the bird.
CrestX
Tufts of feathers on the head of the bird.
FaceX
The front part of the head consisting of the bill, eyes, cheeks and chin.
4 and 6 letter alpha codesX

The four letter common name alpha code is is derived from the first two letters of the common first name and the first two letters of common last name. The six letter species name alpha code is derived from the first three letters of the scientific name (genus) and the first three letters of the scientific name (species). See (1) below for the rules used to create the codes..

Four-letter (for English common names) and six-letter (for scientific names) species alpha codes were developed by Pyle and DeSante (2003, North American Bird-Bander 28:64-79) to reflect A.O.U. taxonomy and nomenclature (A.O.U. 1998) as modified by Supplements 42 (Auk 117:847-858, 2000) and 43 (Auk 119:897-906, 2002). The list has been updated by Pyle and DeSante to reflect changes reported by the A.O.U from 2003 through 2006.

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ITIS CodesX

The Integrated Taxonomic Information System (ITIS) was established in the mid-1990�s as a cooperative project among several federal agencies to improve and expand upon taxonomic data (known as the NODC Taxonomic Code) maintained by the National Oceanographic Data Center (NODC), National Oceanic and Atmospheric Administration (NOAA).

To find the ITIS page for a bird species go to the ITIS web site advanced search and report page at http://www.itis.gov/advanced_search.html. You can enter the TSN or the common name of the bird. It will return the ITIS page for that bird. Another way to obtain the ITIS page is to use the Google search engine. Enter the string ITIS followed by the taxonomic ID, for example "ITIS 178041" will return the page for the Allen's Hummingbird.

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Parts of a Standing birdX
Head Feathers and MarkingsX
Parts of a Flying birdX