What are the major factors of pigeon appetite?

There are many factors for the decline in appetite, such as high temperature, poor digestion, or tapeworm in the body.The temperature is too high in summer, which seriously affects its appetite and requires ventilation to cool down.Poor digestion may be symptoms such as bloating, abdominal pain, and vomiting. At this time, you need to check it in time to see if it is accumulated, and then treat it.In the end, there are tapeworms, which need to be used with insecticide.