A peregrine falcon’s nest near Jedburgh was emptied of eggs by thieves earlier this summer.
Police have confirmed that the nest was targeted between the end of April and the beginning of May.
Officers have been conducting enquiries in an effort to trace the perpetrator, and are now appealing for the public’s help.
PC Jamie Hood, wildlife liaison officer for the Lothians and Scottish Borders, said: “The impact that egg theft can have on our native species threatens the long term sustainability of these birds.
“We expect that these may have been stolen to be sold on the black market, and I would urge people who live and work in the countryside to be vigilant in reporting suspicious behaviour to us.
“I would also ask anyone who has information about this incident, or any other wildlife crime, to call Police Scotland on 101 or call Crimestoppers anonymously on 0800 555 111.”