What if you "opened" up the body and took some of the newspaper, or whatever
is causing so much of the weight, OUT? It could be done with an exacto blade,
and repaired easily. Is he going to glue pink feathers? Perhaps they could
go over the "wound" or just paint it. Sounded like the wire and dowels should
have been enough structural strength, so give that birdie a stomach stapling,
so to speak!
Hope this helps.