Wow, I lived 70mi west in Ventura over the winter and into spring but never saw one Red Winged Blackbird.
I'm planning a trip to California because of the responses here. I hope to add more to my photographic images of Red Winged Blackbirds this year. If I stay where I am the year is over; If I go to Sunny California, I'll get shots of birds and this will wind up being the best year for bird photography. I may even rent that 600mm lens with a 1.4 TX to make things even more exciting.
Thanks for the input to all here,
Ken