Currently, scientists has been an urgency to develop vaccines against novel coronavirus, the COVID19 pandemic, coming from animals, effecting on the; global economy, education, civilization, professional and social life, and communities-health, travel and clinical-research. So, to tackle and overcome the situations, the “Barn Owl Breeding Project of Kanchannagar D.N. Das High School (HS)” where prevails an ecosystem complex with landscaping by trees, garden, play area, pond and river with agriculture; keeping and caring of Barn owl apparently acts as a keystone species in the food-chain-relationships. Rats that happen to spoil food items of mid-day meals, rooms, and documents are controlled by Barn owl. Bats of the banyan tree, make the school building dirty by their excreta are also controlled by this owl. Different pests and mongoose, which are found to significantly reduce food production in agriculture and pisciculture, are also appreciably kept in control. It is worth mentioning that the Barn owl plays the role of the top carnivore, predating on mongoose juveniles and bats, the carrier of coronavirus, showing the “Barn-Owl Act as a Social-Vaccine Against COVID-19 Improving Science and Technology-Communication-Environments-Agriculture-Biodiversity- Conservation-Socioeconomic-Applications with Joyful-Learning-School-Environment”. And, improves midday meal, arouses interest of students and communities on ecology-food-chain-relationships-issues, and contribute to sustainable-pisciculture-pond, agriculture, and kitchen-garden-management, micro- and macro- climate issues, and also community as well as students’ health and awareness development. They are also opening a path of more future research and communication, for the betterment of societal conditions benefitting global humanity by advancing innovations in the fields of scientific research.