So there’s a society of evolved birds, roughly the size of humans but still very much birds. They have a similar level of intelligence as ourselves and are able to speak human language similar to a grey parrot. They have wings but are unable to fly due to their size.
Their society has developed in isolation in the South American rainforests other than minor encounters but with greater deforestation they are now in contact with humanity. Should the Bird People come into conflict with humans, which inevitably they will, how could they defend themselves as in what type of weaponry and/or tactics would work for them?
The birds were created as the result of a experimentation. They are more proficient than humans in close combat as they have talons and beaks and can do some real damage. They do have access to the laboratory but the equipment there is designed for human physiology so they wouldn't be able to use it.
They wouldn't be fighting an army or government. Its more of a mercenary/poacher type force similar to that of Jurassic Park: Lost World.