Bombay Hook National Wildlife Refuge will host its Birding by Impression outdoor field study and indoor workshop from 8 a.m. to 3 p.m. Aug. 5 at the refuge, 2591 Whitehall Neck Road, Smyrna.

The outdoor field study will be on the wildlife drive from 8:30 a.m. to 12:30 p.m. and will focus on shorebird identification and other birds that are present. Dale Rosselet, vice president for New Jersey Audubon Education, will co-lead the trip with Kevin Karlson.

After a break for lunch, not included, the indoor workshop will be from 1:15 to 3 p.m. This interactive workshop shares a different approach to field identification that Karlson calls “Birding by Impression, A Different Approach to Knowing and Identifying Birds,” which is the title of his and Rosselet’s book in the Roger Tory Peterson Reference Series. Covering shorebirds and other bird families, this different identification approach concentrates initially on basic impressions of size, shape and behavior to form an accurate mental picture of each bird seen in the field. A similar approach was used in Karslon’s book “The Shorebird Guide.”

The first hour of the indoor program concentrates on shorebirds, while the final half hour covers other bird families. Real life and comparative digitized photos of similar species are shown to allow for direct comparison of separative features and details.

Copies of Karlson’s books will be available for purchase.

For information or to register, call 653-9345 or email tina_watson@fws.gov.