In contrast, some like garden warblers
, swallows and perhaps surprisingly, cuckoos, will not moult until they have completed their migration to their wintering grounds in Africa and indeed the process can be prolonged in some cases, lasting most of the winter.
More summer migrants arrived over the weekend, with Wood Warblers reported in woodlands across the region, Garden Warblers
at RSPB Conwy, Llyn Cefni and Morfa Madryn, and the first Swift over Pentraeth on Saturday.
Over the past 60-odd years they have now started to nest and breed here and the Lancashire Bird Atlas tells me that they have overtaken garden warblers
as our most common Old World Warbler in the North West.
Learn the differences between willow warblers, chiffchaffs, blackcaps, garden warblers
and sedge warblers.
Activists say the most common species in the traps are Blackcaps, Lesser Whitethroat, Garden Warblers
, Nightingales, and Reed Warblers, all long distant-migrants with populations declining in most EU countries.
A search for blue tits, those charming little garden warblers
, brought up several interesting results, some of which had no connection to our feathered friends at all.
An orchestra of willow and grasshopper warblers, blackcaps, reed and garden warblers
, chiffchaffs, sedge warblers and whitethroats compete for their fair share of audio coverage among all the other bird life.
Elsewhere, arrivals included the first cuckoo at Newborough on Sunday, garden warblers
singing at Mynachdy and RSPB Conwy, whitethroats on the Great Orme and Bardsey, and lesser whitethroat at Cemlyn.
They measured the duration of the stopovers made by garden warblers
on an island off the Italian coast.
Several independent audits by the RSPB at the farm have recorded that more than 40 different species of wild birds such as chiffchaffs, garden warblers
, lesser whitethroats, linnets, swallows and owls are present.
Weindler and his colleagues studied garden warblers
(Sylvia borin), which breed in central and northern Europe and winter in Africa.
I have certainly heard chiff-chaffs, willow warblers and garden warblers
and there may be others I haven't yet heard.