Conversation so far:
when was candlestick park in san francisco built
Construction for Candlestick Park began August 12, 1958 and was finalized in 1960.
what was candlestick park used for
Candlestick Park was an outdoor sports and entertainment stadium.
where is candlestick park stadium located
Candlestick Park was located in San Francisco's Bayview Heights area.
where did the stadium get the name candlestick park
The stadium was situated at Candlestick Point on the western shore of San Francisco Bay. Candlestick Point was named for the Candlestick birds that populated the area for many years.

Question: are the birds extinct in the bay area
Self-contained rewrite: are candlestick birds extinct in the san francsico bay area