Bani's Determined Search

Bani hasn't given up. He continues his search through the field. 'Are you Nani?' he asks one hole. No answer. 'Are you Nani?' he asks the next. Nothing. 'Are you Nani?' he tries another. Silence. Hole after hole, Bani's voice echoes across the dirt field. His bunny paws are getting tired, but he won't stop. Still no answer comes. Where could Nani be?