Superb for ringers Invaluable tool for quick reference, alongside other ringing guides.
Very valuable in the field
A great identification aid As well as all the relevant information for a ringers covering a large number of species the identification links are great useful sources for all birders. Highly recommend this app for all serious birders.
Great app Ringers info linked to Birdfacts is all you need really. No more Svensson, Baker or wader guide, just your smartphone and travel light
Really useful spp
v1.17: Minor database/info update