Hornbills are one of such species with a incredible love story. They are made for each other. Female hornbill locks herself within the cavity by covering the opening with mud, barks, saliva etc. During the incubation period the female undergoes a complete and simultaneous moult(shredding. She leaves a small opening to share the food. Male hornbills collect food for female and young ones. During this breeding season, female and young ones are completely depended on the male for their survival till the juveniles reach a mature state. If the male bird dies during this breeding season that will also result.