1. Fold the paper in half from the middle and fold the two corners inward along the center line.

2. The other two corners are also folded back.

3, more parts are glued and folded in half.

4. Make two identical ones.

5. Punch holes in the corners on both sides and tie them with a mask rope.

6. Draw a nose on the beak of a bird.

7, so that the crow mouth mask is ready.

Crow's characteristics: its mouth likes chirping and its temperament is fierce. It is the largest individual among passerine birds. Its feathers are mostly black or black and white, with a long beak, and some have bright white-collar workers. Kuroha has a purple-blue metallic luster; Wings are much longer than tails; The mouth, legs and feet are pure black.

It mainly inhabits various forest types, such as low mountains, broad-leaved forests in plains and mountains, mixed coniferous and broad-leaved forests, coniferous forests, secondary mixed forests and artificial forests. , especially in sparse forests and forest margins. Mostly resident birds. Strong clustering, a group can reach tens of thousands. Live in groups in forests or fields, especially in forests and grasslands, and most of them nest in trees.

Mainly foraging on the ground, the gait is stable. Except for a few species, they often nest in groups and wander in groups in autumn and winter. Complex behavior, showing strong intelligence and social activity ability.