We start this week's gallery of readers' pictures on the theme of time with a picture by Chris Marvel of a pigeon on a sculpture in Paris.
Melanie Salash: "This was taken from a moving car (I was not driving) in Michigan. It was dusk, so there was still some blue in the sky. As a time-lapse photo goes, I like this one as the tree still looks like a tree, while the other lights are moving."
Paula Tighe: "A house abandoned for some time in Co Donegal, Ireland."
Highton Ridley: "Time passes slowly but relentlessly for these once graceful old ladies of the sea in Pomphlett Creek, Plymouth, Devon."
Jillian Russo: "An illustration of passing time - a firefly inside a wine glass. I left the shutter open to capture his flashing flight path, freezing minutes of time and action into a single image. Then I released the shutter and set the firefly free."
Pauline Richardson: "Demonstrating evolution against the Atlantic sunset."
Suzanne-Claire Williams: "The Astronomical Clock in Prague's Old Town Square. Here crowds gather on the hour to watch the clock chime as skeletal Death empties his hour glass and a procession of apostles march by."
Claudia Buzatu:"Harvest time, a heap of walnuts under the warm autumn light."
P Isztok: "My girlfriend's grandfather is relaxing on a wooden bench he crafted himself some time ago."
Alina Butuliga: "This picture was taken in London while waiting for the green light at a crossing near Aldwych."
Naduha: "Slowly our society has become a cash rich, time poor society. I wonder how many of us spends time with their loved ones especially the children... things don't really matter, it's the moments that will last in their memory."
Chelsea Milligan: "An old-fashioned sun-dial is a reminiscent piece of history at Miami University in Oxford, Ohio."
What are these?