Osprey fans are preparing for a special delivery at Loch of the Lowes.
All eyes are on the nest at the Perthshire reserve as its resident raptor, affectionately known as Lady, continues to show all the signs of preparing to lay her first egg of the season and 69th in her lifetime.
The elderly bird, believed to be the UK’s oldest breeding osprey, has been preparing the eyrie for an imminent arrival.
Ranger Emma Rawling said: “Our female osprey’s behaviour is changing.
“She is much more nest bound and is increasingly spending time in the very centre of the nest.
“She seems restless and when she started sitting and heavy breathing this morning, we thought it was about to happen, but so far there has been nothing yet.
“We are desperately hoping it might happen at any moment.”
Lady delighted her fans by arriving back at the Dunkeld reserve at the end of March.
She wasted no time in reconciling with her mate, known as Laddie and with the gestation period for ospreys averaging at 7 to 10 days, an egg is expected any day now.
The Loch of the Lowes and Montrose Basin visitor centres will be hubs of activity this weekend as the Scottish Wildlife Trust hosts two days of celebrations to mark its 50th anniversary.
Visitors will be able to enjoy free entry and take part in a range of activities, including building a giant osprey nest and making birthday cards.