How good are you at ageing/sexing Twite?

The Heysham wintering Twite, with perhaps a mix of  larger north Scottish birds and smaller south Scottish/the odd Pennine bird are not easy to age/sex.  Have a go at these.  Wing length given as a clue/misleader.

All these pics were taken on 29th March 2013

Please dont respond with a 'Comment' as this might influence others.  Please post to Pete Marsh at PMrsh123@aol.com

Please do comment on the pics and please say whether you want to remain anonymous when I post the answers & your comments in about a month's time.  Thanks.

Pic one:Wing length 76mm

Pic 2:Wing 78 mm

Pic 3:Wing 76mm

Pic 4: Due to a mix-up, not sure which bird this is!

Pic 5: Wing 79mm

Pic 6: Wing 81mm

Pic 7: Wing 76mm