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Bird Moult question

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Old Wednesday 17th April 2019, 12:04   #1
BobbitWorm45
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Bird Moult question

Does anyone have any links or information on detailed process of bird molting. Particularly interested in how long it takes for birds to molt body feathers from winter to spring breeding plumage.
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Old Wednesday 17th April 2019, 20:16   #2
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Varies a lot from species to species. A lot of birds (e.g. thrushes, chats, buntings, finches) only moult once a year, in late summer, and change from winter plumage to summer plumage by shedding dull-coloured feather tips exposing brighter-coloured feather bases.
Any particular birds you were thinking of?
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Old Thursday 18th April 2019, 06:11   #3
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Hi Nutty, apologies for tardy response- I'm interested particularly in how long it would take say a Scandinavian Rock Pipit (littoralis) and Water Pipit to transform from a heavily streaked breast to show the streak free blush pink breast during spring. Hope that makes sense. Cheers
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Old Thursday 18th April 2019, 08:41   #4
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Thanks! Pipits do have a spring moult; I don't have any info myself about timings, hope someone else does
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Old Thursday 18th April 2019, 12:47   #5
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There might be something useful in here:

https://issuu.com/angelc7/docs/moult...uropean_passer
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Old Thursday 18th April 2019, 16:12   #6
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Many thanks Mark, I'll have a browse through that, cheers :)
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Old Thursday 18th April 2019, 18:00   #7
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Quote:
Originally Posted by Fat Paul Scholes View Post
There might be something useful in here:

https://issuu.com/angelc7/docs/moult...uropean_passer
Whilst that book is (still) a fantastic resource, it is focused mostly on wing moult (also some tail moult), and on using this knowledge to age birds in hand (it was usually regarded as a photographic complement to the Svensson passerine guide).
Body moult is not covered there. Note that some birds undergo continuous body moult throughout the year, as large raptors, for example. Wing moult tends to take place post-breeding only (once a year), but some species replace wing feathers twice a year (post and pre-breeding), of which Willow Warbler is an example.
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Old Friday 19th April 2019, 14:42   #8
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Thanks Rafael, it's an interesting read though and does give a few pointers on body molt, but agree, not great detail.
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