On 8/20/2019 at 11:51 AM, "Maeve Kim" wrote:Here’s what eBird says: When in doubt use 'Immature' for any bird that is not an adult. 'Juvenile' is more specific, describing a bird still in its juvenile plumage. This plumage is held only briefly for many songbirds (just a few weeks after leaving the nest) or up to a year for some larger birds like hawks. Once a bird has molted out of this plumage it is no longer a juvenile. If you can't determine this, but know that the bird isn't an adult, just use 'Immature’.
Maeve Kim, Jericho Center
> On Aug 20, 2019, at 11:38 AM, Veer Frost wrote: > > Apropos of nothing but my own confusion, is there an eBird ie > scientific definition of the difference between Juvenile and Immature? > I suspect I use the terms wrongly when reporting, and on Maeve's > report these handsome Goldeneye kids are reported as 'immature'. Is > that because they now feed themselves? (which Juveniles don't?!) ... > thank you for any advice!Veer Frost, Passumpsic > > On 8/20/2019 at 6:07 AM, "Maeve Kim" wrote:We were stumped by five > similar-sounding ducks last week: brown or red-brown heads, tail > sometimes held stiffly, white patches on wing, white on throat or > breast. With a little help from a friend and two guide book, we > decided they were immature goldeneye. There are some poor photos at > https://ebird.org/view/checklist/S58918335 > Maeve Kim, Jericho Center >