The other bowerbirds are polygynous and make various forms of bowers or create stages for mating. One study revealed the catbirds have a smaller brain for their body size compared to the bower-building species.
The other bowerbirds are polygynous and construct various forms of bowers or create stages for mating. One study revealed that catbirds have a smaller brain-to-body mass ratio compared to the species that build elaborate bowers.