The Scottish red kite population has risen to its highest level in 200 years.
The success has been attributed to a re-introduction project near Aberdeen and the fact the species has had one of its best breeding seasons.
There are now 122 breeding pairs in Scotland and 1,200 pairs across the UK.
Red kites were once common all over the British Isles, before widespread killings in Victorian times led to just a few pairs surviving in mid-Wales.
The healthy growth of the UK red kite population since re-introduction began in the late 1980s is increasing the UK's importance for the species globally, with the UK now having a fifth of the world's population.
'Success story'
Duncan Orr-Ewing, head of species and land management at RSPB Scotland, said: "The red kite re-introduction is a real Scottish success story and a credit to the very many landowners, foresters and farmers who work with us and enjoy having the red kite around as part of their daily lives.
"Looking ahead, we hope that the red kite will recover most of its former range and become a familiar sight once again in towns and villages as well as the countryside all over Scotland."
Andy Douse, senior ornithologist at Scottish Natural Heritage, which has been involved in the re-introduction programme, said: "It's terrific that this has been such a good year for red kites, especially given the concerns over how slowly it has been growing in previous years.
"The increases in the north of Scotland are particularly welcome given that this was one of the first locations for red kite releases."
Red kites are almost entirely confined to Europe, and the species is faring badly in many other countries, with population declines recorded in the main breeding areas of Germany, France and Spain.
The species is now classified as "near threatened" by the International Union for Conservation of Nature (IUCN), due to its population declines in Europe.
The four release projects in Scotland have been in the Black Isle, Dumfries and Galloway, central Scotland near Doune and Aberdeen.
Successful re-introductions:
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