Use "preen gland" in a sentence
1. The Study on the Function and Growth of Meat Duck Preen Gland under Diffe...
2. They noted that each bird rubbed its cheek against its preen gland and then onto its neck, back and breast feathers.
1. The Study on the Function and Growth of Meat Duck Preen Gland under Diffe...
2. They noted that each bird rubbed its cheek against its preen gland and then onto its neck, back and breast feathers.