Prolog Connect will handle order taking for the RSPB's UK-wide retailing operation at its integrated customer contact centre in the East Midlands.
It expects to receive up to 200 orders an hour at the contact centre during peak times, the bulk of which will be submitted online or by mail order.
The operation will also serve RSPB stakeholders and partners, including retail and trade outlets.
Diane Firth, head of trading at the RSPB, said: "The RSPB's trading operation raises around £2m a year for the charity's conservation work, so it is vital that we offer our customers a first class service, from orders to after sales care.
"With Prolog linking into our fulfilment chain, we confidently expect our trading activities to flourish to fund even more conservation work into the future."
Peter Soar, Prolog account group manager, said: "We have been tasked with providing significantly enhanced levels of contact for everyone who buys from the RSPB, particularly in keeping customers and stakeholders informed when their orders have been received and dispatched.
"The RSPB have seen that Prolog has appropriate systems technology and the personal touch: in assembling our team of trained agents, empathy with the conservation group's core values has been high among the selection criteria."