Which bird impales its prey on thorns or any available sharp points?

Shrikes are carnivorous passerine birds of the family Laniidae. Shrikes are medium-sized birds with grey, brown, or black and white plumage. Most species are between 16 cm (6.3 in) and 25 cm (9.8 in) in size. Their beaks are hooked, like those of a bird of prey, reflecting their predatory nature, and their calls are strident.

Shrikes are known for their habit of catching insects and small vertebrates and impaling their bodies on thorns, the spikes on barbed-wire fences, or any available sharp point. This helps them to tear the flesh into smaller, more conveniently sized fragments, and serves as a cache so that the shrike can return to the uneaten portions at a later time.

This same behaviour of impaling insects serves as an adaptation to eating the toxic lubber grasshopper, 'Romalea microptera'. The bird waits 1–2 days for the toxins within the grasshopper to degrade before eating it.