tundra swan (Cygnus columbianus)
CONFIRMATION STATUS: Confirmed.
Length: 36 inches Wingspan: 85 inches
Large, long-necked waterbird with short legs and a short duck-like bill
Long neck held straight up with a kink at base
Black bill with variably-sized yellow spot at base
Culmen somewhat concave
Black of bill extends up to eye but does not encircle it
Straight demarcation on forehead between black bill and white feather- ing
Black legs and feet
Entirely white plumage
Body grayer than adult
The very large tundra swan is unlikely to be confused with anything but
other swans. White pelicans, whooping cranes, wood storks, and snow
geese are all white birds that from a great distance could look like swans
but all have black primaries. The adult mute swan can be told from the
adult tundra swan by its orange and black knobby bill. The adult
trumpeter swan is very similar to the adult tundra swan but it is slightly
larger, has a straight culmen, the bill has no yellow spot, the eye is
enclosed by black, and the white feathering on the head extends in a
v shape into the dark bill. In the far northwest, a subspecies of the
tundra swan shows more yellow at the base of the bill and could be
confused with the Alaskan whooper swan. The whooper swan has
yellow in the bill that goes beyond the nostril.
Migration Status: N/A
Breeding Habitat: N/A
Nest Location: N/A
Nest Type: N/A
Clutch Size: 5
Length of Incubation: 35-40 days
Days to Fledge: 60-70+
Number of Broods: 1
Diet: Almost exclusively green plant matter, seeds; lesser quantities
of aquatic invertebrates
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
Fall: September, October, November R
Winter: December, January, February R
Crooked Run Valley