Greater coucal

I saw a greater coucal this morning. I have seen it from time to time over the years. They usually come in pairs. I think it was a greater coucal rather than a lesser coucal on account of its size. The one I saw was larger than a crow or chicken and it was waddling on the ground before flying off. It was a very shy bird. I had tried taking photos of it but it was difficult. I heard the harsh scolding "skeeaaaw" frequently, one of the calls of the greater coucal.