Painting in Audubon's Lines

We all have one in a closet somewhere: an old print that has lost its lustre.



Sunlight happens. A print that's hanging in a corner that's dark in January is suddenly illuminated by a shaft of morning sun in June. Shine enough such June morning sunbeams on a print, even one behind conservation glass, and bad stuff happens.







The Arctic tern loses all the color in its blood-red bill