Savannah Sparrows show some variation in size across subspecies.

The Savannah Sparrows proper (see below) are very similar, and migrant birds can not usually be related to a breeding population with certainty.

The Ables conducted their experiments by keeping the Savannah sparrows in cages exposed to the sky.

Refuge grasslands provide habitat for upland sandpipers, bobolinks, and Savannah sparrows.

The Ipswich Sparrow is somewhat larger and paler in colour than other eastern Savannah Sparrows.

Female savannah sparrows, Passerculus sandwichensis, chose MHC-dissimilar males to mate with.

The park setting provides a habitat for many birds including bobolinks, eastern meadowlarks, eastern bluebirds, grasshopper sparrows, and savannah sparrows.

Some of the other sightings include the Great & Snowy Egrets, and the Long-Billed Savannah Sparrows.

During the summer, large numbers of double-crested cormorants, Virginia rails and various songbirds (Savannah sparrows and common yellowthroats) rely on the Island for nesting habitat.

An American study showed that migratory Savannah Sparrows used polarised light from an area of sky near the horizon to recalibrate their magnetic navigation system at both sunrise and sunset.

Although most human beings cannot see patterns of polarization in light with the naked eye, they can see them, including the polarized band seen by the Savannah sparrows, by holding up polarizing sunglasses or camera filters and observing the sky through them.

In a study performed by Kenneth P. and Mary A. Able of the State University of New York at Albany, 20 Savannah sparrows were divided into four groups and exposed to a rotating disk with dim lights resembling stars.

The Savannah Sparrow (Passerculus sandwichensis) is a small American sparrow.

Female savannah sparrows, Passerculus sandwichensis, chose MHC-dissimilar males to mate with.