Some news sites do not receive all of the news that is posted on alt.sport.falconry. If you are receiving responses without the original posts then you are probably not receiving everything that gets posted. Some news sites are out of the loop and don't receive everything.

Google Groups (formerly DejaNews) seems to receive all posts.
http://groups.google.com/groups?q=alt.sport.falconry

Zippo Dot Com - alt.sport.falconry
http://drn.zippo.com/news-bin/wwwnews?alt.sport.falconry

As of 2000 many non-Usenet discussion groups as well as list servers have been created by and for falconers. These are more user-friendly than Usenet and have become more widely used.