I think "The Isle of Voices" might have been shown as part of the Edinburgh International Film Festival (at the arthouse film cinema) in 1995 then disappeared into oblivion. Sadly the EIFF don't seem to have any online records for that year but I stumbled across a review written by an ordinary punter ...
Edinburgh Fringe and Film Festivals 1995 .... 21 August: 18:00--19:22 DEFF: "The Isle of Voices" & "STRANGE STORIES .... The anthology film STRANGE STORIES was preceded by a previously unannounced short, "The Isle of Voices" (based on the Robert Louis Stevenson short story). It's about a man who discovers his father-in-law is a sorcerer who can transport himself and others to the "Isle of Voices" to collect treasure. The short was a modernized version, complete with transportation effects influenced by Dr. Who, and seemed the sort of thing that would be shown here as a "young adult" type show. (Maybe that's just because it lacked sex, and the main character looked and acted more like a large teenager than a married man.) Look for it--it's not great, but it's well done and fun."
As for "Bird House", apparently it premiered in May 2005. Must have been a local showing as a couple of months later, it was available for viewing by request at the
2005 Edinburgh International Film Festival (see P65) I presume they mean distributers etc can request to view it? I tried looking up the director and
this site (updated in March 2007) says
"Bird House has recently been picked up by Big Film Shorts for international distribution." It isn't mentioned on the Big Film Shorts website so don't know if the deal fell through or not. So it might yet appear ....
ETA - forgot to mention (in case anyone was interested) that "Bird House" also appeared as part of the San Gio Video Festival 2006 in Verona, Italy.