in the photo you just posted and the one Jaws posted, you can tell the nose is not yellow.
Not necessarily. You just can't tell by that photo due to the shadow and poor quality.
Staffel are gruppe leaders. Stab/JG 27 would be the Sqn commande, leading gruppe 1. 2./JG27 would be gruppe 2.
what?
Staffel = Squadron = 12 to 16 planes...
A Staffel is further broken down into 3 or 4 'Schwärme' led by the Schwärmführer; which in turn can be broken down into 2 plane elements known as 'Rotte' led by the Rottenführer
A Staffel is lead by the Staffelkapitän
Gruppe = 3 to 4 Staffel + 4 plane Stab
Gruppen are led by the Kommandeure
Geschwader = 3 to 4 Gruppen + 4 plane Stab
The Geschwader is led by the Kommodore
The individual Gruppen were also identified by a symbol which was positioned directly aft of the fuselage cross, except for the I. Gruppe which did not have a symbol. These Gruppen symbols were painted on both Stab aircraft and the individual Staffel machines."
So that means this profile comes form 1 gruppe. Were it 2./JG27 it would have a dash.
No that's not what it means.
I./JG 27 in '41 consisted of 3 Staffeln.
1st Staffel - written as 1./JG 27 - White Numerals
2nd Staffel - written as 2./JG 27 - Red/Black Numerals
3rd Staffel - written as 3./JG 27 - Yellow Numerals
The Gruppen symbols are aft of the Balkankreuz on the fuselage.
On 'Black 3' there is no Gruppe symbol so we know it's I./Gruppe (written I./JG 27). Gruppe designation are written in Roman numerals. (I./, II./, III./, IV./,)
Since the numeral is Black/Red we know it's the 2nd Staffel of the I./Gruppe. 2nd Staffel written as 2./JG 27.
We know its JG 27 because of the Geschwader emblem.
Regardless of the nose / rudder color that's an E-6/Trop of 2./JG 27. I will dig out my book and find a picture that shows the nose and tail much clearer tomorrow.