We start off with a flashback scene where a young solider, Fred returns from Vietnam to go see his wife and child. Unfortunately, he discovers her in bed with another man, to which he ends up killing both but sparing his child. He is nearly caught by friends (family members) who have come to see them to which he adds to the massacre. While cleaning up the mess Fred is attacked by one the falcons they have in the house (the house has a lot of birds!) who gouges his eyes out making him blind.
We last see him going into hospital blinded and having given his son away to social services.
Twenty years later a group of college students go off to investigate sightings of a rare woodpecker that is considered nearly extinct. It turns out that one of the few known people to have seen it is Fred and so they seek him out to find out more information from him.
This however beings to unlock the vengeful spirits of Fred's victims and throws the group into a nightmare of a situation they try to escape from...
Zombie 5: Killing Birds, has a few titles, Zombi 5, Killing Birds and was under the title Zombie Flesheaters 4 here in the UK. Not an exact sequel to any of the other films in the series, though to be fair none of them were sequels to each other!
Killing Birds could also be misleading as none of the birds in the movie kill anyone and the zombies could be seen more as demons as they are all after one person in particular.
I did enjoy the film; it wasn't as bad as many people have made out to be. I do think they may have used most the budget to hire Robert Vaughn to be the main star in the film! Mean as a later Italian horror film it is not going to stand out as one of the best but if you want a bit of a cheesy horror this film has it.
With it being filmed in America, it was probably aimed more for the horror market there. I know the cinema in Italy wasn't as big as it was due to more channels becoming available via cable etc, so more films were being produced for television rather than the big screen.
Some great gore and practical effects with one scene reminding me a bit of Anthrophagous which made sense to me later when one of the directors of this film is Aristide Massaccesi, a.k.a. Joe D'Amato!
Claudio Lattanzi is also listed as the director of this film, there seems to be a bit of a question who filmed what though it seems no one who worked on the film can remember!
There are two blu rays of this film out at the moment, one on Vinegar Syndrome in the States and the other on 88 Films here in the UK.