This 21 May 2020 video from Malta says about itself
Early May is the peak time in the Yelkouan breeding season for hatching and many new faces have emerged in the colonies over the past couple of weeks.
The Yelkouan Shearwater chicks first enter the world damp and fragile, but soon dry off to reveal their grey downy coat which will keep them warm until they grow their flight feathers. In the first few days of its life, the parents are very attentive to ensure survival of the chick, at least one parent will remain with the chick to brood it whilst it continues to develop.
By the end of the first week, the chick is left to fend for itself, whilst the parents forage for food. The chick is provided with a meal at least once each night. Foraging trips during early chick-rearing are shorter, so the adults can return more frequently to feed the demanding chick.
Editing by Katarzyna Pacon.