Jess has kindly bought "Valiant" on DVD and lent it to me, I watched the movie and went through some of the main environments that we could use. The London scenes are very good and also the countryside and hills. There is still yet a lot to go through in the film, as it is a very good reference for our pigeons concept and idea.... As an animator, I can study flying sequences and how birds fly. Though owl's fly slightly differently in terms of their body weight.
I have here some screen shots I thought might be useful. I have made a colour mood board out of them.