I grew birdhouse gourds this past summer. In October, i put the fun, pale green gourds on my front step. In November, they are turning tan, so i'm bringing them indoors to dry out. By January, i should hear the seeds rattling around inside, and that's when i can begin creating actual birdhouses.
When our own bodies dry out and begin to rattle (creaky joints, clicking knees, cracking necks), the green and growing part of our lives has passed, but we still have a lot of "use" remaining. We have even more room in our hearts for the problems of the world, and more elasticity for the problems of those we love.
I like thinking about little birdies living in the heart of these birdhouse gourds.