Remsen, J.V. 1975 Eastern Meadowlark Sturnella magna May 10 Jumbo Res, Logan Co., Colo: 10 seen and heard in a wet grassy field adjacent to a large pond at a state wildlife Area south of Jumbo. Res. Jumbo Res state wildlife Area parking lot man made (?) ponds - diked with dirt mounds in water. Eastern Meadowlark area < crook Hwy 138 sign "Red Lion" state wildlife Area parking lot ditch N sedgwick Immediately recognized by song, very different from that of a Western - a clear whistled "see-seedle-see" first note highest. Call note also different from Western - a chatter introduced by an inflected note "boy-tititititititi." This was heard over and over again during interactions among individuals singing the Eastern song. Eastems were never heard to give any other vocalizations but these two. Their faces were pure whitish, not streaked darker in the cheeks as in Westerns we studied at close range- Also we had excellent views through scopes of the tail patterns of both species and were able to clearly see the difference shown by Robbins et.al - Eastern rectrix (bars connected by dark central band) Western rectrix (pale areas between bars)