I have also had the same problem as Jon reading the ABA Tweeters listing on
my phone. The problem is with the ABA. The 404 error means that the web
file that contains the mobile Tweeters listing has been deleted from the
ABA site.

I recently wrote an email to ABA alerting them to the problem (info at aba.org).
It probably wouldn't hurt for others to do the same.

In the meantime the Surfbirds listing continues to work:
https://surfbirds.com/birdingmail/Group/Tweeters

This isn't formatted for small devices but at least you can read the
messages.

Randy Robinson
Seattle, WA
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