The last several decades of research on avian cognition have revealed surprising parallels
between the abilities of birds—most notably corvids—and great apes. Parrots, albeit far less …

Psittacines, along with corvids, are commonly referred to as 'feathered apes' due to their
advanced cognitive abilities. Until rather recently, the research effort on parrot cognition was …

The ability to manipulate objects with limbs has evolved repeatedly among land tetrapods.
Several selective forces have been proposed to explain the emergence of forelimb …

The use of different tools to achieve a single goal is considered unique to human and
primate technology. To unravel the origins of such complex behaviors, it is crucial to …

Play behaviour and tool using in birds, two well-delineated and amply researched
behaviours, have generally been associated with cognitive abilities. In this study, these …

The use of tool sets constitutes one of the most elaborate examples of animal technology,
and reports of it in nature are limited to chimpanzees and Goffin's cockatoos. Although tool …

The ability to innovate, ie, to exhibit new or modified learned behaviours, can facilitate
adaptation to environmental changes or exploiting novel resources. We hereby introduce a …

Parrots are renowned for their intelligence and ability to imitate human speech ever since
they have been kept as pets. Despite of impressive pioneering work on the cognitive abilities …

Utilising weight cues can improve the efficiency of foraging behaviours by providing
information on nutritional value, material strength, and tool functionality. Attending to weight …

Goffin's cockatoos (Cacatua goffiniana) can solve a diverse set of mechanical problems,
such as tool use, tool manufacture, and mechanical puzzles. However, the proximate …