[6] In November 2015 Brewster released a promotional video showing people dressed in raven costumes from the film pranking walkers and sightseers in Scotland.

These flashbacks are so intimidating that Andrew has developed a phobia of ravens and as a result he travels to a retreat in the Scottish Highlands to come to terms with his past and his fears.

While developing the film Daly and Brewster were inspired by figures from Norse and Celtic mythology such as the Valkyries and The Morrígan.

[10][12] Horror film critic Kim Newman reviewed The Unkindness of Ravens, writing that it was "a demanding, complicated film which might well require repeat viewings to parse fully – but this team are doing something interesting and unusual at a budget level where it would be easier to turn out a standard slasher-in-the-woods.

"[13] SciFiNow also wrote a review, commenting that the film had its flaws but that there was "a lot to admire here" and praised its "impressive visuals bolstered by a fantastic lead performance".