Keeping pigeons is different than doves. Doves, stay inside cages, and will fly away if they are set free. Pigeons, are different and need to be homeset to not fly away. Not sure where those pigeons your pictures show are. They seem very tame.

You need to keep more than a single pigeon, since they are not a solitary type of bird. Have to provide a suitable loft to house them as well. It is similar to requirements of chickens, with some obvious differences.
I suggest you seek out some Youtube videos to get some ideas what is involved.
Here is one to start with. you can view other videos as they will become displayed on right side or screen of Youtube.
WISHING YOU BEST,,,,,,,,,,,,,,,,,,,,,,, and
