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Tyrannus forficatus
scissor-tailed flycatcher


By Alesha Williams

Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Aves
Order: Passeriformes
Family: Tyrannidae
Genus: Tyrannus
Species: Tyrannus forficatus

Geographic Range

Breeds in Texas, Oklahoma, Kansas, and southern Nebraska, and occasionally eastern to western Louisiana and southwestern Missouri; migrates to and winters in Central America. The birds' wintering grounds can be anywhere within south Mexico through central Costa Rica and rarely into Panama as well as the southern tip of Florida.

(Peterson, 1963; Rand, 1971; Regosin, 1998)

Biogeographic Regions
nearctic (Native )

Habitat

Range elevation
1000 to 2300 m
(3280.84 to 7545.93 ft)

Average elevation
1500 m
(4921.26 ft)

BREEDING HABITAT:

Breeds mainly in savannas that contain a few trees, shrubs and or brushes. But may also be found in agricultural and urban areas as well as pastures in their breeding time.

SPRING & FALL MIGRATION:

Sits on fence posts or bushes in open country of Texas and Oklahoma; prefers open grassland and areas with scattered trees.

WINTER MIGRATION:

Present in savannas, pastures, agricultural lands, urban areas and at the periphery of tropical forests.

(Regosin, 1998; Rand, 1971)

Habitat Regions
temperate ; terrestrial

Other Habitat Features
urban ; suburban ; agricultural

Physical Description

Range mass
36 to 43 g
(1.27 to 1.52 oz)

Range length
159 to 225 mm
(6.26 to 8.86 in)

Range wingspan
111 to 125 mm
(4.37 to 4.92 in)

Scissor-tailed flycatchers are slender, pale gray and black, with contrasting white tails and pink flanks; red patches are present just under the wings at the shoulders. The common name refers to the long rectrices that have a gap between them giving the appearance of scissors. Females are usually shorter than males and have shorter tails.

(Oklahoma Department of Wildlife Conservation, no date; Peterson, 1963; Rand, 1971)

Other Physical Features
endothermic ; bilateral symmetry

Reproduction

These birds are socially monogamous. (Regosin, 1998)

Mating System
monogamous

Breeding season
April to August

Range eggs per season
3 to 6

Average time to hatching
14 days

Average time to fledging
14 days

Average age at sexual or reproductive maturity (female)
1 years

Average age at sexual or reproductive maturity (male)
1 years

As soon as birds arrive back on their breeding grounds in the United States, breeding pairs are formed. The female primarily builds the nest but the male may help in shaping the nest with his bill and or feet. There can be four to five eggs per clutch in a nest and up to two broods are produced per season. Nests are usually built in small trees or shrubs. The eggs are incubated for 12-14 days and the hatchlings require another 14 days before they can leave the nest. (Rand, 1971; Sutton, 1977)

Key Reproductive Features
iteroparous ; seasonal breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; fertilization (External ); oviparous

The male assists in feeding the young. The young are altricial and are born naked except for some white down. (Regosin, 1998)

Parental Investment
altricial ; male parental care ; female parental care

Behavior

They will occasionally walk, hop, or climb on the ground or on tree branches. In order for them to fly, they make rapid wing-beats with their long tail folded behind them. They will preen, head-scratch, stretch, bathe, sleep, roost, and sunbathe when it is appropriate for them to do so.

They aggressively defend their territories against intrusions by conspecifics.

(Regosin, 1998)

Key Behaviors
flies; motile ; migratory ; territorial ; social

Food Habits

Scissor-tailed flycatchers forage at heights ranging from the ground to 10 meters. They capture their prey by aerial hawking or gleaning during prey-specific flight forays. (Regosin, 1998)

They eat mostly grasshoppers and beetles but have been known to eat bees, wasps, spiders, crickets, some fruits and berries as well. (Oklahoma Department of Wildlife Conservation, no date)

Animal Foods
insects; terrestrial non-insect arthropods

Plant Foods
fruit

Economic Importance for Humans: Positive

Their diet can consist largely of agricultural pests and therefore they are helpers in keeping the ecosystems around crops in better order. The long tail feathers have been used make peyote fans. Otherwise, the human utility of the bird is limited to the beauty of the bird witnessed in their skydances.

(Oklahoma Department of Wildlife Conservation, no date)

Positive Impacts
controls pest population

Conservation Status

IUCN Red List [Link]
Least Concern

US Migratory Bird Act [Link]
Protected

US Federal List [Link]
No special status

CITES [Link]
No special status

State of Michigan List [Link]
No special status

There is currently no conservation effort focused on this bird. Like other avian species, as long as it has adequate habitat - grasslands, open area, and agricultural lands - there is a chance it can survive with humans.

Other Comments

  1. Adopted state bird of Oklahoma in May 26, 1951 (Sutton, 1977).
  2. Previously known as Muscivora forficata (Rand, 1971; Peterson 1963).

For More Information

Find Tyrannus forficatus information at

Contributors

Alesha Williams (author), University of Arizona, Jay Taylor (editor), University of Arizona.

References

Oklahoma Department of, W. No date.. "Oklahoma's Tropical Ambassador -- The scissor-tailed flycatcher" (On-line). Accessed April 4, 2002 at http://www.npwrc.usgs.gov/resource/othrdata/okscisso/okscisso.htm.

Peterson, R. 1963. A Field Guide to the Birds: Giving field Marks of all Species Found East of the Rockies. Boston: Riverside Press Cambridge.

Rand, A. 1971. Birds of North America. New York: Doubleday & Company, Inc..

Regosin, J. 1998. Scissor-tailed Flycatcher. Birds of North America, 342: 1-20.

Sutton, G. 1977. Fifty Common Birds of Oklahoma and the Southern Great Plains. Oklahoma: University of Oklahoma Press.

Wood, D., G. Schnell. 1984. Distribution of Oklahoma Birds. Norman, Oklahoma: University of Oklahoma Press.

To cite this page: Williams, A. 2002. "Tyrannus forficatus" (On-line), Animal Diversity Web. Accessed February 12, 2012 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Tyrannus_forficatus.html

Disclaimer: The Animal Diversity Web is an educational resource written largely by and for college students. ADW doesn't cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control.

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