Organisations pledge to raise a certain amount towards the campaign, then hold events or take donations to achieve that goal. As an individual you can raise money yourself and give it to the zoo for them to give to EAZA, or you can donate directly to the campaign.As for Chester and the EAZA ape campaign, is it possible for anybody to raise money and give it to the zoo for the campaign, or is it raised by donations at the zoo and events the zoo organises strictly?
There is lots of information on the EAZA mini-site: EAZA Ape Campaign