How big is the pigeon began to grun

The pigeon began to grun for two months.Guru screamed in estrus, and they would not call again after they were paired.They are gurgling when they are frightened. Such a pigeon who just arrives at home will appear.At this time, don't disturb them, let them raise them for a few days, and it will be better to adapt slowly.In addition, they may also grun when they are sick.