The Osprey (Pandion haliaetus), is a a fish eating bird of prey. It is a large raptor with a 2 m wingspan. It is brown on the upperparts and predominantly greyish on the head and underparts, with a black eye patch and wings.

The Osprey tolerates a wide variety of habitats, nesting in any location near a body of water providing an adequate food supply. It is found on all continents except Antarctica although in South America it occurs only as a non-breeding migrant.

For 20 years "Lady" has bred at Loch of the Lowes and returned for a record 21st year. Lady's latest clutch of eggs have so far failed to hatch, suggesting that age may finally have caught up with her.

Wildlife experts at the Loch of the Lowes reserve remain hopeful of a change in fortune and believe that there may still be a window of opportunity for offspring to appear.

However, at Loch Garten in the Highlands resident osprey EJ successfully produced two chicks last month from eggs laid in mid-April — the same time Lady's first egg appeared.

Although it has been some 50 days since she amazed onlookers by laying her 59th egg, the elderly bird and her mate Laird continue to watch over the nest, with the young male eagerly taking on incubation duties.

Volunteers are still mounting a 24-hour vigil to protect the eggs, as they are a valuable commodity to collectors.

While Loch of the Lowes may not see any chicks this year, fans of the famous feathered couple remain devoted to the ongoing saga.