The 16th annual San Diego Bird Festival takes wing on Mission Bay between March 1-4, when beginning and expert birders flock to view some of the county’s 500-plus species of birds. The multiple-day event includes guided field trips like popular pelagic birding adventures, a Birding & Optics EXPO, workshops, social mixers and bird-art classes. March 4 is Family Free Day, with special art and nature events planned just for children and families. Registration for the four-day festival is $20 (the fee is waived for Family Free Day events on March 4). Fees for workshops and field trips vary, including some specialized trips, workshops and events that are free. Parking at Marina Village is free.?For information and to register, call (858) 273-7800, visit www.sandiegoaudubon.org, or email [email protected].