is there a particular procedure for adding former species to the catalogue or is it the same as adding current? Are there any different standards for records for older visits?
A ZTL admin or more experienced user can step in and correct me if I'm wrong, but my understanding is that it's more or less the same. When you're editing, you can either add it directly to former holdings (by having ZTL set to "Former") or you can add it to current and then just switch it. Sources and formatting works the same way.
This is a perfect segue into something else I wanted to bring up today: when a zoo phased out a species recently and you switch it to former,
please include: 1) a source for why it is now former, and 2) the last year it was held (so right now would be "until 2025"). Someone switched sun bear at Racine Zoo to former - which was correct - but declined to provide any source or reason in their edits as to why, which is necessary to avoid confusion when there are sources from the last couple years showing them having the species.
Another thing to note: keep in mind
what each box is for. Top box is for general information - holding dates for the species (since 2019, 2014-2024, until 2025, etc.), if they breed, year of first breeding, subspecies info, etc. Middle box is for specific holding information - transfers, births and deaths, holding numbers, etc. Third box is for sources - visit date, URLs for online sources, etc.