RE. Johnson 1967 March 19 Stinson Beach, Marin Co., California, waterways adjacent to mudflats exposed by low tide, north of Stinson Beach. Warm, sunny, partially cloudy. Two herons found in same area as the 12 American Egrets (also 3 Snowy Egrets). One flew over & circled while croaking as if disturbed. Feeds in similar manner to American Egret (wading in shallow water, standing with neck in "S" & then making quick stab) but appears to be less efficient. It always appears to come up with a small (1 1/2-2 inch) shiey wiggling object (fish?) but it usually also has a beak full of algae. Several quick beak movements are required to separate the fish & algae & on occasion the Fish is nearly lost. Seen to remove & place beak beneath water & then tilt head up as if to drink (sea water) - perhaps somewhat brackish since several small streams enter from the east. One flew to the vicinity of an American Egret & the egret flew, the heron then continued toward another egret which also flew; each egret landed a short distance out of the general path of the heron. Heron appears to feed very infrequently (especially when compared to Amer. Egrot), perhaps it is feeding on larger prey?). Both birds usually walk with neck forward at angle & straight when searching for food ( ), then crouch into "S" when food is spotted. They may continue to walk forward while in crouch & even body is lowered. If "jab" is forward neck's length,