Why are there fewer magpies on July 7th? Scientific explanation.

1, because during the seventh day of July every year, all kinds of crops in rural areas mature one after another and insects increase accordingly, which is the best time for magpies to prey. Insecticides used to kill insects and mice in crops are harmful to magpies. Magpies are omnivorous birds, often foraging in cultivated land, orchards and vegetable gardens, and it is easy to eat insects, seeds and plant fruits contaminated by pesticides. Compared with the emergence of groups in the past, it is indeed less.

2, because every year around the seventh day of July, magpies will change their feathers to cope with the arrival of winter. Magpies like to nest in tall trees, and modern deforestation has led to changes in their living environment. In the period when no new feathers grow, the activity ability of magpies is reduced and the number of natural appearances is less.