[7] Peter Gray of The AU Review gave the film five out of five stars, writing "Visceral and feral, Birdeater blends its topical commentary on separation anxiety and fragile masculinity with an almost hallucinatory mentality.
Its intrusive editing and claustrophobic camera shots further highlight Weir and Clark's stronghold on genre execution, resulting in a truly horrific vision that revels in its uncompromising temperament".
[10] FilmInk valued the film as worth A$15.00 (out of a maximum of A$20.00), writing "it's not breaking any new ground, but it's suspenseful, effectively disturbing and for the most part, very well acted".
[11] Ari Mattes wrote in The Conversation: "Birdeater is brilliantly shot and edited, the sound design and music are exemplary... and the acting is absolutely first-rate", and thinks it worth seeing, but that the second half did not live up to the promise of the first.
[12] Luke Buckmaster gave it two stars out of five, and wrote in The Guardian "Shabana Azeez and Mackenzie Fearnley are good as the husband and wife to be but this horror film feels indecisive and stretches too long".