Tern, Caspian
Description: This is a fairly common large tern most often seen flying over the lakes or standing on mudflats south of the Dixon Prairie.
Tern, Black
Description: This state-endangered tern species is associated with prairie wetlands and may be seen flying overhead.
Teal, Green-winged
Description: This small, non-diving duck is usually seen in small to medium flocks on Garden lakes or flying over.
Teal, Blue-winged*
Description: This non-diving duck resembles the green-winged teal in size and behavior.
Tanager, Summer
Description: This rare southern visitor may be spotted in any wooded habitat at the Garden.
Tanager, Scarlet***
Description:A fairly common migrant and breeder here. Look for it in any wooded habitat on migration or in McDonald Woods in summer.
Swift, Chimney**
Description: The Garden's lone swift species is exclusively seen flying overhead in small groups while chasing insects. In the evening, they dive into open chimneys where they roost and nest.
Swan, Tundra
Description: Possibly visible in the lakes or flying with flocks overhead, this bird resembles the trumpeter swan, but with a small yellow spot near the eye.
Swan, Mute
Description: Unusual sights, these invasive birds are white with yellowish bills.
Swallow, Tree***
Description: One of five species of swallows seen at the Garden. Look for them flying around the Dixon Prairie where they nest in birdhouses placed out for them and bluebirds.