Organizing a Wiki takes event
A "Wiki takes" event is a photography contest to add images and other media to Wikimedia Commons.
Past contests have been in museums, towns and even whole cities. Most have focussed on photography, but the same principal would apply for recordings of animal sounds and movements in a zoo.
Anyone is of course welcome to organise such an event. But if you do one in the UK there are a few things that we can usually help with.
Ideally an event needs a base with WiFi coffee and doughnuts, publicity to recruit photographers and a prize for the winner. If you organise something outdoors then you need a contingency plan - this an be as simple as "if wet we'll have a beer in the Tudor Rose on the High St instead".
But the essential ingredients are a date and a target.