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eastern meadowlark
The eastern meadowlark (''Sturnella magna'') is a medium-sized icterid bird, very similar in appearance to the western meadowlark. It occurs from eastern North America to South America, where it is also most widespread in the east.
==Description==
The adult eastern meadowlark measures from in length and spans across the wings. Body mass ranges from .〔''CRC Handbook of Avian Body Masses'' by John B. Dunning Jr. (Editor). CRC Press (1992), ISBN 978-0849342585.〕 The extended wing bone measures , the tail measures , the culmen measures and the tarsus measures . Females are smaller in all physical dimensions.〔Jaramillo, Alvaro and Burke, Peter (1999) ''New World Blackbirds: The Icterids'', Christopher Helm Publishing, ISBN 978-0713643336〕 Adults have yellow underparts with a black "V" on the breast and white flanks with black streaks. The upperparts are mainly brown with black streaks. They have a long pointed bill; the head is striped with light brown and black.
The song of this bird is of pure, melancholy whistles, and thus simpler than the jumbled and flutey song of the western meadowlark; their ranges overlap across central North America. In the field, the song is often the easiest way to tell the two species apart, though plumage differences do exist, like tail pattern and malar coloration.
The pale Lilian's meadowlark of northern Mexico and the southwestern US is sometimes split off as a separate species.
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