Police have again warned people living in the countryside to be on their guard against thieves who target high-value all-terrain vehicles.
The advice comes after a spate of raids, the latest in areas of Peeblesshire.
Overnight on Sunday, two red Honda quad bikes were taken from a locked shed on a farm near West Linton.
The shed had a steel door that was heavily secured with a padlock within a metal box but the raiders forced it open.
Raiders took the bikes, a jump starter and the padlock – a haul valued at around £8,200.
The same night, on a farm near Traquair, thieves unscrewed a padlock and hasp from a shed and took a green Honda quad bike that was stored inside.
In addition, between 10pm on Wednesday of last week and 7am the next day there were two raids on farms, police said.
A Honda TRX 500cc quad was taken from the Talla Farm area of Tweedsmuir while a 300cc model of the same make was taken from the Karecoles Farm area of Dolphinton.
A spokesman for Lothian and Borders Police appealed for information about any of the thefts and added: “The public – especially in rural areas – are reminded to remain vigilant.”