When you follow a given account on #Mastodon with your #kbin account, posts from that account will be #federated here. If they use #hashtags, then posts they write will be federated into #magazines here based on permitted tags chosen by magazine moderators which show up in the #microblogging section of a magazine. AFAIK, posts that don't get sorted into a particular magazine will be sent to @random. In order to search for magazines/communities, you can search for linux@lemmy.world for example.
Uncaught PHP Exception Symfony\Component\HttpClient\Exception\TransportException: "Operation timed out after 2910 milliseconds with 0 bytes received for "https://miraiverse.xyz/objects/55e10faf-b84a-4ce1-bc36-bc6617a5edc3"." at /srv/app/vendor/symfony/http-client/Chunk/ErrorChunk.php line 56
So I found two other Akkoma instances to also test against and received the same error. This seems to be some issue with kbin trying to pull Akkoma posts. I'll dig a little deeper later on.
However, manually entering the complete URL into the address bar kbin.social/u/@rosemarymosco@wandering.shop will show the profile correctly as well as the post that we were just searching for https://kbin.social/m/random/p/1133358/Bird-molt-is-a-mysterious-process-but-here-I-ve-demystified