discovery_channel_logo.pngDiscovery Communications had a great fourth quarter, the company announced today, with net income of $337 millon on revenues of $1.1 billion.

The income was up 71 percent(!) with revenue up 11 percent. Ad sales rose 13 percent to $364 milllion in the US even as channels raised prices; same story internationally, where ad sales rose 18 percent to $160 million.

Deadline.com reports that CEO David Zaslav wouldn’t say how the Oprah Winfrey Network (OWN) was doing. Winfrey has “a team she has confidence in, and I have confidence in,” he said, adding that Discovery “learned a great deal about its audience” last year and is “off to a nice start in 2012.″