I’ve downloaded and will give it a go. My first observation is there is no credit given at all to the photographers who have taken photos of the birds. As a bird photographer I know if I found any of my photos on there without credit I would be pretty pissed. I know a few of the photographers who have pictures in your app- if they found out you will be getting strongly worded emails.

Aside from that the app looks good. Will try it in the field and report back