300
Birds, especially magpies, swoop on people and moving things during Spring for which reason?
a) There is an increase in the amount of people outside
b) Sprouting plants make them ravenous for food
c) To protect their nests
What is to protect their nests. After mating then building their nests they lay their eggs usually in winter depending on species. Spring is the breeding season for birds and they are on the lookout for anything moving that could steal their eggs or young.