The juvenile’s feathers are more fluffy and look more disordered here. Actually, mango is covered in squashed mango too, so s/he looks a bit more bedraggled than usual. In this detail of under the tail the more obvious barring of juveniles can be clearly seen
Mango (caught in the mango trap) is a much younger bird with no nuchal crest
Birds are aged by the replacement of feathers in their wings
Here I was testing to what extent bowerbirds would steal objects from other bowers. This container of green glass nuggets was placed equidistant between bowers 5, 12 and 4 (which was quite close to bower 12). The bower 12 bird took many of the nuggets. In the end two nuggets were moved from bower …
bower 1 detail of grey objects (at end of field visit)