Actually that laying record was set in the 1920s and is no longer the record (it's still the brown egg record, although sex links will typically lay more brown eggs than Black Australorps). The current record was set in 1979 by a White Leghorn hen which layed 371 eggs in 364 days (https://cafnr.missouri.edu/about/chicken.php). Having said that however, I much prefer the calm and gentle termperament of the Australorp to the high strung and flighty temperament of the Leghorns. If high yield laying is a priority, Black Sex Links (Black Stars) are another excellent alternative as they are very friendly and hardy egg laying machines that will consistently lay more than 300 large brown eggs per hen per year with double yolks not being uncommon.
