This is a multi-part message in MIME format. ------=_NextPart_000_0017_01BEBB15.34669D00 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Yes. There is no reason to doubt that the nestlings you heard were the = offspring of this 1st year male(I prefer this term rather than immature) = . It takes two years for male Orchard Orioles to attain the adult plumage. = They are perfectly capable of breeding(you saw evidence of this), but = generally less likely of obtaining a mate than the 2 year and older = males because they usually have less desirable territories. Of course = this depends on the number of orioles present. Two other local species = in the same sort of situation are American Redstarts and Red-winged = Blackbirds where 1st year males have different plumages than the older = males. =20 Paul Woodward ------=_NextPart_000_0017_01BEBB15.34669D00 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 HTML//EN">