Jerry Blinn closed AviSys in August 2015 and passed away in November 2015 without leaving any provision for continuity of AviSys. Ownership of his website, avisys.net, expired and it is no longer in operation. I have preserved relevant pages from the website here, with some additional material, including annual Clements taxonomic updates for 2016–2023.
These are the additional materials that are provided here:
2024 taxonomy update
Last updated: 23 October 2024
2024 Nation Checklist Add-On
Last updated: 3 November 2024
Recover from
Renumber Master Checklist
AviSys export to eBird, etc. tool
Last updated: 21 September 2021
Updated eBirdLocs.avi
Last updated: December 2018
In case you would like to make your own taxonomic updates, I have preserved Jerry's EditMaster program here.
Here are some additional documents that may be of interest.