“Bird Migration: Why, Where, When and How Birds Migrate” will be the topic Saturday, April 15, the seventh in a series of 10 classes for backyard birders.

From 10 a.m.-noon, Ken Leuthold will lead an exploration of the astonishing world of long-distance flying, without any stopovers to rest or refuel.

Even though the godwits may not stop over in Sequim, hummingbirds and swallows returning from their winters in the south will be seen.

Most of the swans which have spent their winter here have left for the north.

The series of classes, hosted by members of the Olympic Peninsula Audubon Society, is intended for residents of this area who are interested in knowing more about birds seen locally each season of the year.

Backyard Birding can be taken either as individual classes or in a series. The cost of each session is $5 and is free for anyone under 18. After the completion of five sessions, participants will be offered free membership in OPAS for one year.