On the Move
Paul Kerlinger
Contributing Editor Paul Kerlinger is a biologist and nationally known expert on bird migration and behavior and a former director of New Jersey Audubon's Cape May Bird Observatory. He first used radar to track bird migration more than 25 years ago, and he was one of the first to study birding ecotourism and economics. His first article in Birder's World, the essay "Are Black Rails for Real?" appeared in April 1994. His column "On the Move" appears in every issue of the magazine.

Read more about Paul Kerlinger
Definitions of terms ornithologists use to describe bird migration
By Paul Kerlinger
Published: February 19, 2010

The Virginia Rail migrates at low altitudes, but its routes and stopovers are unknown

By Paul Kerlinger
Published: February 19, 2010

Christmas Bird Counts and satellite studies have begun to uncover the secrets of where and how Gyrfalcons migrate

By Paul Kerlinger
Published: December 28, 2009
Why Pine Siskin and other northern finches make irregular movements in winter
By Paul Kerlinger
Published: October 23, 2009
Why versatile, agile Northern Harriers are able to migrate differently than all other hawks
By Paul Kerlinger
Published: August 21, 2009
Why it's not always apparent if the shorebirds we're watching are heading north or south
By Paul Kerlinger
Published: June 19, 2009
Why Bay-breasted Warbler starts to arrive just as migration starts to wind down
By Paul Kerlinger
Published: April 24, 2009
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