Cathartes
aura
(Turkey Vulture)
Species
Update:
*Cathartidae species are
now officially considered Ciconiiformes. In other words, New World vultures
(i.e., Turkey Vulture, Condors, etc.) have been genetically found to be related
to storks and not hawks in DNA research on convergent evolution
.
Physical
Description:
26-32" (66-81 cm). Large,
black bird with a red, featherless face and a pale, downcurved bill; yellow
feet. In flight, wings show lighter
primary feathers.
Similar Species- Black Vulture, Swainson's Hawk, Zone-tailed Hawk
Song:
Occasionally hisses.
Distribution:
Breeds from southern British
Columbia, east to southern Manitoba and New England, and south through U.S.
and Middle America to South America. Winters mainly from northern California,
Arizona, Ohio Valley, and Maryland south to South America.
Diet:
Eats mainly vertebrate carrion; prefers
fresh meat. Sometimes eats ripe or rotten fruits.
Ecology:
Uses scant nest on cliff or standing snag.
May roost singly, or in large flocks
in trees at night; roosts
are often near or over
water. In Maryland/Pennsylvania study, average distance between communal roost
and feeding site was 8 km. Roosts may be temporary (at food source), seasonal
(spring-fall), or permanent. In one study, most individuals left roost 3.5-5
hr after sunrise. Individual may remain at roost up to 2 or more days during
rainy weather. Locates food visually, or by odor. Hunts at 60 m, but migrates
between 1200-1500 m. Light wing loading permits ease of flight. Species is resistant
to botulism
.
Reproduction:
Both sexes incubate
2 eggs (usually) for 5-6
wk. Young first fly at about 9 wk. Family may stay together several months after
young fledge
.
Conservation:
| Element Code: | ABNKA02010 |
| Status: | Protected nongame species |
| Global Rank: | G5 |
| State Rank: | S4,NTMB |
| National Rank: | N5B,N5N |
Important
References:
AOU Checklist, 1998, 7th
Ed..