I don't know with the wild-type...if a boy it will develop a bib and start turning blue
and the red feathers of course around the vent area and if it's a normal red breasted male, the breast will be half blue and half red.
The silver if it's a male, some get bibs and pink bellies and pink vent feathers. females are all silver or silver and pearly.
The Red breasted girls, still looks like them.

The silver if it's a male, some get bibs and pink bellies and pink vent feathers. females are all silver or silver and pearly.
The Red breasted girls, still looks like them.