Is my cockatiel a boy or girl?
Yawning Without Covering Your Mouth It may be hard to suppress that yawn—they are contagious, after all—but leaving your mouth uncovered is undeniably rude. “Yawning is a sign that you’re tired, so it is polite to cover your mouth and even apologize for yawning while talking to someone,” says Chertoff.
Chances are, your morning grogginess is just sleep inertia, which is a normal part of the waking process. Your brain typically doesn’t instantly wake up after sleeping. It transitions gradually to a wakeful state. During this transition period, you may feel groggy or disoriented.
Another reason you may yawn is because the body wants to wake itself up. The motion helps stretch the lungs and their tissues, and it allows the body to flex its muscles and joints. It may also force blood toward your face and brain to increase alertness.
Why do birds constantly yawn?
Where applicable, males have slightly darker or brighter colorings on the face and orange cheek patches. Any hint of barring, markings or spots on the underside of the tail feathers or wings when they are spread indicates a female (you may need to hold your cockatiel up to a bright light in order to see any markings.