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Bird name:

Rhinoceros Auklet

Cerorhinca monocerata

Order

CHARADRIIFORMES

Family

Auks, Murres and Puffins (Alcidae)

Code 4

RHAU

Code 6

CERMON

ITIS

177023

Breeding Location:

Lakes, Seashore, rocky or sandy, Rocky places, Rivers



Breeding Type:

Monogamous, Small colonies



Breeding Population:



Egg Color:

White with brown, gray or lavender spots



Number of Eggs:

1



Incubation Days:

39 - 52



Egg Incubator:

Both sexes



Nest Material:

Twigs, moss, and ferns.



Migration:

Nonmigratory



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General

Rhinoceros Auklet: Medium-sized seabird with black upperparts, dark gray underparts, and white belly. Eyes have long white plumes above and below. Bill is yellow with pale horn. Sexes are similar. Winter adult is duller and lacks bill horn and eye plumes.

Range and Habitat

Rhinoceros Auklet: Breeds from the Aleutians south to central California and winters off breeding grounds and south to southern California; also winters in Asia.

Breeding and Nesting

Rhinoceros Auklet: One white egg, often spotted, is laid in a burrow; nests in colonies, sometimes in large numbers. Incubation ranges from 39 to 52 days and is carried out by both parents.

Foraging and Feeding

Rhinoceros Auklet: Feeds mainly on small fish, but sometimes takes crustaceans and squid; forages by diving from the surface and pursuing prey under water.

Vocalization

Rhinoceros Auklet: Gives low growling notes on the nest.

Similar Species

Rhinoceros Auklet: In basic plumage, the smaller Cassin's Auklet, the whiter-bellied Parakeet Auklet, and larger-billed Tufted Puffin are all similar because they share the darker plumage.

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UnderpartsX
Belly, undertail coverts, chest, flanks, and foreneck.
UpperpartsX
Back, rump, hindneck, wings, and crown.
BellyX
The ventral part of the bird, or the area between the flanks on each side and the crissum and breast. Flight muscles are located between the belly and the breast.
PlumesX
Large, conspicuous, showy feathers.
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