He joined CHCH in Hamilton in 1960, and then moved to CTV in 1963. He joined the CTV National News in 1963 as co-anchor replacing Baden Langton who had joined ABC News. He initially co-anchored with Peter Jennings and Ab Douglas but when Jennings followed Langton to ABC, Kirck became sole anchor with Douglas doing inserts from Ottawa. In 1976, Kirck was joined by Lloyd Robertson, forming an anchoring team that remained until Kirck's retirement from the broadcast in 1984. From 1984 to 1987 he was a host on W5. He also hosted Sketches of Our Town from the mid 1980s to early 1990s.