Meleagris ocellataocellated turkey

Ge­o­graphic Range

Ocel­lated turkeys are en­demic to Mex­ico's Yu­catan Penin­sula, north Guatemala, and north-west and west-cen­tral Be­lize. (Bail­lie and Groom­bridge, 2004)

Habi­tat

Ocel­lated turkeys most fre­quently in­habit low­land ever­green and trop­i­cal de­cid­u­ous forests. Clear­ings are uti­lized dur­ing the breed­ing sea­son. Birds may also be found in such var­ied habi­tats as marsh­land, sa­van­nah, aban­doned farm­land, and old growth ma­ture rain­for­est. (Ben­stead and Cap­per, 2007; "Species pro­file - Ocel­lated Turkey", 2008; Tay­lor, et al., 2002)

Phys­i­cal De­scrip­tion

Ocel­lated turkeys are sim­i­lar in ap­pear­ance to North Amer­i­can wild turkeys (Me­lea­gris gal­lopavo), but are lighter in weight and more bril­liantly col­ored. Males weigh about 4.5 kg and are roughly 0.9 m in length. Fe­males weigh about 2.7 kg.

The body feath­ers of ocel­lated turkeys are an iri­des­cent bronze-green color, with those of the male being brighter than the fe­male. The tail feath­ers are bluish-gray with blue-bronze eye spots on the ends, which give this bird its name, as ocu­lus is Latin for eye. The tail feath­ers also have a bright gold tip.

The skin of the head and neck lacks feath­ers, is bright blue, and is scat­tered with or­ange-red nod­ules or "warts". Around the eye is a bright red ring of skin. Males have a blue fleshy crown on their heads with yel­low-or­ange warts. Dur­ing the breed­ing sea­son, the crown en­larges and the eye-ring and warts be­come more vis­i­ble in males. Legs are a dark red color in both sexes, but adult males have spurs mea­sur­ing around 3.8 cm in length. ("Species pro­file - Ocel­lated Turkey", 2008; "Species pro­file - Ocel­lated Turkey", 2008; Tay­lor, et al., 2002)

  • Average mass
    males 4.5 and females 2.7 kg
    lb
  • Average length
    0.9 m
    2.95 ft

Re­pro­duc­tion

Ocel­lated turkeys breed sea­son­ally. Start­ing the first week of Feb­ru­ary, males begin to change in ap­pear­ance, with crowns be­com­ing en­larged and skin warts be­com­ing more pro­nounced and col­or­ful. From Feb­ru­ary through April males gob­ble and strut to at­tract mates. Just be­fore strut­ting, a male wags his tail feath­ers from side to side. Dur­ing the strut he spreads the tail fan, holds his head and neck back over the body, drags both wings on the ground, and vi­brates one wing. He struts and cir­cles a hen until she ei­ther leaves or squats down for cop­u­la­tion. Males may also gob­ble dur­ing a strut.

These breed­ing dis­plays occur in open areas in the early morn­ing be­fore sun­rise. After the sun rises, the birds re­turn to the for­est where the tem­per­a­ture is cooler. Males con­tinue to gob­ble in the for­est, while sit­ting on the ground. (Tay­lor, et al., 2002)

The breed­ing sea­son of ocel­lated turkeys oc­curs once yearly, with most breed­ing oc­cur­ring from late March to mid-April. Hens lay 8 to 16 eggs (av­er­age 12) any time be­tween mid-March and mid-May. Most poults hatch by mid-June, but hatch­ing can range from early May to July. A study in Tikal (1993) showed that each hen pro­duced an av­er­age of six poults. (Gaumer, 1881; Tay­lor, et al., 2002)

  • Breeding interval
    Ocellated turkeys breed once yearly.
  • Breeding season
    Most breeding happens from late March to mid-April.
  • Range eggs per season
    8 to 16

The fe­male be­gins her parental in­vest­ment with build­ing a nest in which to lay her eggs. The nest is built within the cover of dense veg­e­ta­tion, to hide it from preda­tors. A small cav­ity is made in the ground and a few sticks and leaves are placed in and around the hole. When the chicks hatch, the hen will boldly fight, even risk­ing her own life, to de­fend the lives of her off­spring. (Gaumer, 1881)

It is not known whether males pro­vide any parental care. Work done in 1979 by Sug­i­hara and He­s­ton sug­gests that ocel­lated turkeys have a sim­i­lar so­cial sys­tem to that of Amer­i­can wild turkeys (Me­lea­gris gal­lopavo), in which males do not gen­er­ally pro­vide parental care. Young turkeys are ca­pa­ble of walk­ing and feed­ing soon after hatch­ing. (Sug­i­hara and He­s­ton, 1981)

  • Parental Investment
  • precocial
  • pre-fertilization
    • provisioning
    • protecting
      • female
  • pre-hatching/birth
    • provisioning
      • female
    • protecting
      • female
  • pre-weaning/fledging
    • provisioning
      • female
    • protecting
      • female
  • pre-independence

Lifes­pan/Longevity

There is no avail­able in­for­ma­tion about lifes­pan in ocel­lated turkeys.

Be­hav­ior

Ocel­lated turkeys are di­ur­nal. They feed dur­ing the day and roost in trees at night. They are fast fliers and swift run­ners. Ocel­lated turkeys are so­cial and are some­times seen in large flocks. Gaumer (1881) once counted 62 turkeys roost­ing on three ad­ja­cent trees. Each flock ap­pears to be led by an in­di­vid­ual that is in con­trol of the flock's move­ment. (Gaumer, 1881)

Flock size and com­po­si­tion seem to change with the time of year. Sug­i­hara and He­s­ton (1981) ob­served 3 birds to be the av­er­age flock size in Jan­u­ary, with flocks con­sist­ing ei­ther solely of adult males or of year­ling males and fe­males along with adult fe­males. Leopold (1948) noted that flocks ranged from 3 to 10 birds in No­vem­ber and con­sisted of hens and gob­blers. Stead­man et. al. (1979) ob­served that flocks in Feb­ru­ary through March av­er­aged 11 in­di­vid­u­als and were com­posed of hens and gob­blers. By April, the av­er­age flock size went down to 3 in­di­vid­u­als. This de­crease in flock size was due to males leav­ing the flock to be­come soli­tary and at­tract fe­males, and fe­males leav­ing to start lay­ing eggs. (Sug­i­hara and He­s­ton, 1981)

Home Range

There is no in­for­ma­tion at this time on av­er­age home range size in ocel­lated turkeys.

Com­mu­ni­ca­tion and Per­cep­tion

Ocel­lated turkeys are not as vocal as North Amer­i­can turkeys, which may be due to the high num­ber of preda­tor species found in the forests of Cen­tral Amer­ica. It may be in their best in­ter­est to be quiet birds that re­main un­de­tected. How­ever, male turkeys do make low fre­quency drum­ming sounds, fol­lowed by a high-pitched gob­bling noise. Gob­bling and strut­ting are used by males in the breed­ing sea­son to at­tract mates. Both males and fe­males make a nasal cluck-putt lo­ca­tion call, which can be made louder to sound alarm. (Tay­lor, et al., 2002)

Food Habits

Ocel­lated turkeys are di­etary gen­er­al­ists. Their om­niv­o­rous diet con­sists of var­i­ous seeds, berries, and leaves, in ad­di­tion to in­sects. They have been ob­served eat­ing grass seed heads of Pas­palum con­ju­ga­tum, as well as the leaves of plants such as Am­brosia ar­timisi­ifo­lia, Vitis spp., Pas­palum spp., and Ze­b­rina spp. In­sects con­sumed in­clude moths, bee­tles, and leaf cut­ter ants (Atta cephalotes). These birds for­age on the ground and tend to re­main in small groups when feed­ing. ("Species pro­file - Ocel­lated Turkey", 2008; Sug­i­hara and He­s­ton, 1981)

  • Animal Foods
  • insects
  • Plant Foods
  • leaves
  • roots and tubers
  • seeds, grains, and nuts
  • fruit

Pre­da­tion

Ocel­lated turkey adults and young are preyed on by gray foxes, mar­gay cats, ocelots, rac­coons, coatis, cougars, jaguarundi, jaguars, snakes, and birds of prey. Hu­mans also hunt adult turkeys for food.

Ocel­lated turkeys run fast and fly well, which help them to es­cape preda­tors. Both male and fe­male adults make a loud cluck-putt alarm call, which warns oth­ers in the flock. Birds roost in trees where they are safe from ground preda­tors. (Gaumer, 1881; Tay­lor, et al., 2002)

Ecosys­tem Roles

Ocel­lated turkeys pro­vide food for preda­tors. Also, the turkeys' con­sump­tion of in­sects may help to con­trol in­sect pop­u­la­tions. (Tay­lor, et al., 2002)

Eco­nomic Im­por­tance for Hu­mans: Pos­i­tive

Reg­u­lated sport hunt­ing of ocel­lated turkeys and preser­va­tion of habi­tat can ben­e­fit the econ­omy. Mex­ico has made hunt­ing reg­u­la­tions in order to con­serve this valu­able re­source, while also at­tract­ing hunters to come in from out­side the area to help boost the econ­omy of small vil­lages. These turkeys pro­vide a source of food for local peo­ple. (Tay­lor, et al., 2002)

  • Positive Impacts
  • food

Eco­nomic Im­por­tance for Hu­mans: Neg­a­tive

There are no known ad­verse ef­fects of ocel­lated turkeys on hu­mans.

Con­ser­va­tion Sta­tus

Rel­a­tively large pop­u­la­tions of ocel­lated turkeys are found in pro­tected areas of Be­lize, where this species is most com­mon. How­ever, in gen­eral, ocel­lated turkeys are rare and have been elim­i­nated from some areas of Mex­ico, such as north Yu­catan, west Campeche, north­east Chi­a­pas, and east Tabasco. Sur­vival rates for fe­males and poults dur­ing the breed­ing sea­son are a low 60-75% and 15%, re­spec­tively, in Tikal Na­tional Park in Guatemala.

Num­bers are de­creas­ing due to in­tense hunt­ing for food and sport. Also, large-scale clear-cut­ting and slash and burn meth­ods to make way for agri­cul­ture are de­stroy­ing suit­able habi­tat and mak­ing birds eas­ier tar­gets for hunt­ing. (Ben­stead and Cap­per, 2007; "Species pro­file - Ocel­lated Turkey", 2008)

Other Com­ments

Me­lea­gris ocel­lata is also some­times known as Agri­ocharis ocel­lata. (Ben­stead and Cap­per, 2007)

Con­trib­u­tors

Tanya Dewey (ed­i­tor), An­i­mal Di­ver­sity Web.

Rachel Mc­Falls (au­thor), North­ern Michi­gan Uni­ver­sity, Alec R. Lind­say (ed­i­tor, in­struc­tor), North­ern Michi­gan Uni­ver­sity.

Glossary

Neotropical

living in the southern part of the New World. In other words, Central and South America.

World Map

acoustic

uses sound to communicate

bilateral symmetry

having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.

chemical

uses smells or other chemicals to communicate

diurnal
  1. active during the day, 2. lasting for one day.
endothermic

animals that use metabolically generated heat to regulate body temperature independently of ambient temperature. Endothermy is a synapomorphy of the Mammalia, although it may have arisen in a (now extinct) synapsid ancestor; the fossil record does not distinguish these possibilities. Convergent in birds.

food

A substance that provides both nutrients and energy to a living thing.

forest

forest biomes are dominated by trees, otherwise forest biomes can vary widely in amount of precipitation and seasonality.

iteroparous

offspring are produced in more than one group (litters, clutches, etc.) and across multiple seasons (or other periods hospitable to reproduction). Iteroparous animals must, by definition, survive over multiple seasons (or periodic condition changes).

marsh

marshes are wetland areas often dominated by grasses and reeds.

motile

having the capacity to move from one place to another.

native range

the area in which the animal is naturally found, the region in which it is endemic.

omnivore

an animal that mainly eats all kinds of things, including plants and animals

oviparous

reproduction in which eggs are released by the female; development of offspring occurs outside the mother's body.

polygynous

having more than one female as a mate at one time

rainforest

rainforests, both temperate and tropical, are dominated by trees often forming a closed canopy with little light reaching the ground. Epiphytes and climbing plants are also abundant. Precipitation is typically not limiting, but may be somewhat seasonal.

seasonal breeding

breeding is confined to a particular season

sedentary

remains in the same area

sexual

reproduction that includes combining the genetic contribution of two individuals, a male and a female

sexual ornamentation

one of the sexes (usually males) has special physical structures used in courting the other sex or fighting the same sex. For example: antlers, elongated tails, special spurs.

social

associates with others of its species; forms social groups.

tactile

uses touch to communicate

terrestrial

Living on the ground.

tropical

the region of the earth that surrounds the equator, from 23.5 degrees north to 23.5 degrees south.

tropical savanna and grassland

A terrestrial biome. Savannas are grasslands with scattered individual trees that do not form a closed canopy. Extensive savannas are found in parts of subtropical and tropical Africa and South America, and in Australia.

savanna

A grassland with scattered trees or scattered clumps of trees, a type of community intermediate between grassland and forest. See also Tropical savanna and grassland biome.

temperate grassland

A terrestrial biome found in temperate latitudes (>23.5° N or S latitude). Vegetation is made up mostly of grasses, the height and species diversity of which depend largely on the amount of moisture available. Fire and grazing are important in the long-term maintenance of grasslands.

visual

uses sight to communicate

young precocial

young are relatively well-developed when born

Ref­er­ences

Rain­for­est Al­liance. 2008. "Species pro­file - Ocel­lated Turkey" (On-line). Rain­for­est Al­liance Learn­ing Site. Ac­cessed April 16, 2008 at http://​www.​rainforest-alliance.​org/​programs/​education/​teachers/​curriculum/​resources/​documents/​ocellatedturkeyprofile_​001.​pdf.

Bail­lie, J., B. Groom­bridge. 2004. "Me­lea­gris ocel­lata" (On-line). The IUCN Red List of Threat­ened Species. Ac­cessed April 16, 2008 at http://​www.​iucnredlist.​org/​search/​details.​php/​40168/​all.

Ben­stead, P., D. Cap­per. 2007. "Species fact­sheet: Me­lea­gris ocel­lata " (On-line). BirdLife In­ter­na­tional. Ac­cessed April 17, 2008 at http://​www.​birdlife.​org/​datazone/​search/​species_​search.​html?​action=SpcHTMDetails.​asp&​sid=305&​m=0.

Gaumer, G. 1881. Notes on Me­lea­gris ocel­lata, Cu­vier. Trans­ac­tions of the An­nual Meet­ings of the Kansas Acad­emy of Sci­ence, 8: 60-62.

Sug­i­hara, G., K. He­s­ton. 1981. Field Notes on Win­ter Flocks of the Ocel­lated Turkey (Agri­ocharis ocel­lata). The Auk, 98/2: 396-398.

Tay­lor, C., H. Quigley, M. Gon­za­lez. 2002. "Ocel­lated Turkey (Me­lea­gris ocel­lata)" (On-line pdf). Na­tional Wild Turkey Fed­er­a­tion. Ac­cessed April 18, 2008 at http://​www.​nwtf.​org/​conservation/​bulletins/​bulletin_​06.​pdf#​search%3D'ocel­lated%20­turkey'.