Yes, a parrot can potentially die if it experiences a severe stress reaction after being frightened. It's crucial to provide immediate comfort and support to help them recover quickly when they are startled.
If a newly purchased parrot dies overnight, it's often due to stress. The new environment can be overwhelming, causing the bird to become overwhelmed, leading to its demise. When a budgerigar (also known as a parakeet) is frightened, it may huddle into a ball, hide in corners, exhibit lethargy, refuse food, shy away from humans and avoid being touched. If your budgie is startled, it's important to create a calm environment to allow it to recover gradually. During regular feedings, try placing food in your hand and encouraging the bird to come to you to eat. Over time, this can help to build their confidence and reduce their fear responses.
For minor frights, a parrot may recover on its own relatively quickly. If the bird begins hitting its cage in a panic, it may take two to three hours to recover even after being calmed down. Severe fright, however, can be life-threatening and require immediate veterinary attention.