By Kevin KeaneBBC Scotland's environment correspondent
2 May 2018
Scottish Natural Heritage has defended its controversial decision to allow ravens to be killed for the protection of wading birds.
The licence, for the Strathbraan area of Perth and Kinross, has prompted outrage from conservationists because ravens are a protected species.
But wading birds, such as lapwings and curlews, are in a rapid decline which is "reaching crisis point."
Land managers say the control measures allow all species to thrive.
Gamekeepers say the ravens often arrive in glens in significant numbers where they attack and kill the wading birds.
RSPB Scotland insists there is little evidence that ravens are the main cause of the decline in numbers.
Nick Halfhide, head of sustainable development at Scottish Natural Heritage (SNH), told BBC Scotland: "We really understand that people find this a difficult topic. Killing one species to protect another isn't something that others like, but unfortunately it's something land managers do on a regular basis and they have to do that to protect their interests.