The nests are sturdy, bulky structures measuring about 50 cm in diameter and predominantly comprising medium live sticks of "Avicenna" species on which many leaves are still attached. These nests resemble those of the grey heron and the white ibis but are slightly more robust and comprise thicker twigs. However, other nests found have been small and flimsy structures that resemble those of doves. When collecting nesting material, milky storks break off live branches from trees by grasping the branch with their bill and flying upwards a short distance, which appears to be a difficult task and sometimes unsuccessful. If the stork does not manage the free the branch, it moves on to another one. Nest building continues even with young in the nest.