🦜Vida e comportamento

Irene Pepperberg’s papers treated English tokens as categories, not circus tricks. Alex (1976–2007) identified colours, shapes and same/different above chance. The debate is about the ceiling, not whether the tasks happened.

Wild capture for pets plus forest loss cut Psittacus erithacus. Appendix I ended most commercial international trade in wild greys.

Every Strigops is named and managed on predator-free New Zealand islands. Supplementary feeding and nest cameras make it closer to intensive care than to a hands-off reserve.

They are an introduced boom, not a restored native. Cavity competition with starlings and bats is the local argument.

Cavity trees come down with forest. The pet trade added a second cut. Spix’s macaw went extinct in the wild before a 2019–20s reintroduction attempt in Bahia.

They learn contact calls in flocks. Human-word mimicry is the lab and living-room version of a general vocal-learning kit shared with songbirds and hummingbirds.