What is "birdnesting"

Usage examples of "birdnesting".

When the rain brought the grass out in green and filled the shallow pans on the plateau with water it was no longer simply a sign that the birdnesting season had begun and that the fishing in the Baboon Stroorn would improve now it meant that they could take cattle up from the valley, it meant that there would be fat on the herds they drove into the sale pens at Lady-burg it meant that another winter had ended and again the land was rich with life and the promise of life.