ensen, J.V. 1973 Red-throated Loon Gavia stellata July 6 Half Moon Bay, San Mateo Co., Calif: 1 non-breed plum Pigeon Point, San Mateo Co., Calif: 2 " Sep. 2 Pescadero Beach, San Mateo Co., Calif: 31 in breeding plumage (fading), 15 of which all took off to the south at once. One in non-breed plum. was about 1/2 mile upstream on Pescadero Creek - An obvious migrant concentration - early? Sep 21 Pescadero Beach: 1 n-breed plum. Oct. 13 Point Reyes N.S., Marin Co., Calif: 5 south point cove Oct. 27 Point Reyes N.S.: 30 Tomales Bay Nov. 3 Point Reyes N.S.: 30 " + Fishing Cove Nov. 22 Malibu Lagoon, Los Angeles Co., Calif: 1