Possible reasons for fluttering:
* Preening: Doves spend a significant amount of time preening their feathers, which involves a lot of wing movement.
* Warm-up: Just like any bird, doves might flutter their wings to warm up their muscles, especially after resting.
* Courtship: Some species of doves use wing fluttering as part of their courtship displays.
* Distress: If a dove is feeling threatened or distressed, it may flutter its wings as a warning or defense mechanism.
* Injury: If a dove has an injured wing, it might flutter it abnormally.
Signs that a dove might be sick:
* Lethargy: A dove that is sick will often be less active and sluggish.
* Difficulty breathing: A dove with respiratory problems may pant or make a wheezing sound.
* Discharge from the eyes or nostrils: This could indicate an infection.
* Loss of appetite: A sick dove might stop eating or drinking.
* Diarrhea: Loose or watery droppings can be a sign of illness.
* Abnormal feathering: A sick dove might have ruffled or missing feathers.
If you see a dove fluttering its wings a lot, observe it closely. If you notice any other signs of illness, it's best to contact a wildlife rehabilitator or veterinarian.