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Originally Posted by Jonners  Around this time of year you might also find that adult robins lose some of their redness and become a bit speckly |
?Do they? Those that have finished breeding will be starting to go through post-natal moult around now and although they will be worn, they don't look 'speckly'. The breast moult will start during primary moult but old feathers are replaced by the same red coloured ones. Some birds that are breeding for their first year will have retained some old greater coverts from their juvenile plumage, but these wouldn't be that obvious unless in the hand.
Please prove me wrong though if adults do go speckly when in p-n moult.