ringnecked duck (Aythya collaris)
CONFIRMATION STATUS: Confirmed.
Length: 12 inches Wingspan: 28 inches
Small, compact diving duck
Dark wing with grayish flight feathers
Immature female similar to adult female, immature male is similar to female in autumn, but acquires alternate plumage during winter
Adult male alternate:
Alternate plumage worn from fall through early summer
Blue bill with white ring around base, white subterminal ring, and black tip
Purple head and neck
Chestnut ring around neck is not easily visible
Gray flanks with vertical white finger at forward portion
Dark back, tail, upper- and undertail coverts
Adult male basic:
Similar to adult female
Dark brown crown and pale gray-brown face, becoming whitish on lores
Dark blue-gray bill with white ring before black tip
Brown eye with narrow white eye ring
Dark brown body plumage with very dark back
Adult males can be distinguished from scaup by different bill pattern,
black back and grayish flanks. Female can be distinguished from female
scaup by black tip on bill, and lack of distinct white patch on face. Fe-
male-plumage birds are distinguished from female-plumage redheads
by colder brown plumage, contrasting gray-brown face, and peaked
Breeding Habitat:Wetland-open water
Length of Incubation: 26-27(25-29) days
Days to Fledge:49-56
Number of Broods:1
Diet: Primarily plant matter; lesser quantities of aquatic invertebrates and
SKY MEADOWS DISTRIBUTION/SEASONAL OCCURRENCE
Relative abundance and seasonal occurrence are indicated in red below.
C - Common: Likely to be present in good numbers in appropriate habitat and season.
U - Uncommon: May be present in appropriate habitat and season, often in low
O - Occassional: Found in appropriate habitat perhaps only a few times per season,
sometimes low numbers.
R - Rare: May not be recorded every year.
Acc - Accidental: Recorded once or twice, may not be expected again for a long time.
Sp - Spring: March, April, May R
Su - Summer: June, July, August Acc
Fall: September, October, November R
Winter: December, January, February
Crooked Run Valley