Western meadowlark, eastern meadowlark
Chapter 8: How Songs Change over Space and Time
Subchapter: Song changes over evolutionary time
From page 150 in the book.
Western meadowlark Photo by Robert Royse
Eastern meadowlark Photo by Robert Royse
WESTERN MEADOWLARK
♫616. Western meadowlark: The learned western songs are stunning in their clarity and beauty. Long-billed curlew in background. June 3, 2009. Red Rock Lakes National Wildlife Refuge, Lima, Montana. (4:27)
♫619. Western meadowlark: Innate calls are a chup, chup, followed by a dry, rolling chatter, vicicicicicicicic. Singing horned lark in background. May 27, 2006. Murphy's Pasture, Pawnee National Grassland, Colorado. (2:14)
EASTERN MEADOWLARK
♫617. Eastern meadowlark: The learned eastern songs are a sliding spring-o'-the-yeeaar. May 10, 2004. Natural Bridge, Virginia. (5:05)
♫618. Eastern meadowlark: Innate calls are a dzert, or longer dzert-ert-ert-ert-ert-ert. June 2, 2008. Mammoth Cave National Park, Kentucky. (2:36)
For ♫620-♫629, see Explore 70.