Douglas Dewar, A Bird Calendar for Northern India
“ Hoopoes nest in holes in trees or buildings. The aperture to the nest cavity is invariably small. The hen hoopoe alone incubates, and as, when once she has begun to sit, she rarely, if ever, leaves the nest till the eggs are hatched, the cock has to bring food to her. But, to describe the nesting operations of the hoopoe in January is like talking of cricket in April. It is in February and March that the hoopoes nest in their millions, and call softly, from morn till eve, uk-uk-uk. ”
