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Payment methods

- Visa or MasterCard credit card. PayPlug enables a payment easily and securely without having to create special account. PayPlug, a French company (for more information www.payplug.com/fr/), uses secure protocol 3DS for safe online purchases.

- PayPal. You do not need to own a PayPal account to pay: you may enter your credit card's details directly at PayPal. Once you get redirected to PayPal, just click on "Don't have a PayPal account?". Then follow the instructions. You don't need to register a PayPal account neither. Paypal uses secure protocol 3DS for safe online purchases.

- wire transfer. You leave no information concerning your bank account on this site. Our bank details are given to you during the checkout process. Then you perform the transfer from the usual site of your bank with usual secure protocols. Several days are often required for the transfer to be registered.

- bank cheque valid in France (to be sent by postal mail)

My intention in publishing these guides is to provide a practical field guide presenting in one volume information useful to ringers during regular ringing operations. This extensively studied subject requires permanent updating. Some criteria may derive from personal observations but are mainly from published data (more than 2600 references). Among them, the major BTO guides are invaluable references for Bird Ringers. We would like to thank the BTO for their contribution to the industry and our work. Please, see here for details of their guides.