Magpie Lark parenting December 3, 2023 Geoff Ball Magpie Larks build a large mud nest and lay three to five eggs. Both parents sit on the nest during the 18 days of incubation and both parents feed the chick with worms, insects and caterpillars for a further three weeks. But parenting doesn’t stop when the chicks leave home as seen in the picture above. After several days both parents are still very active, feeding the surviving fledgling.