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There was a surprising number of ordinary typos in H&M 3, but most of them got caught pretty quickly and fixed in the corrigenda.

Fortunately (at least from what I can see) H&M 4 was produced using a database as its source, thereby cutting down on this kind of thing. It's a lot easier to use a computer to notice the presence of one Pheuticus among a list of Pheucticuses than it is to have a person read the list.
 
i don't think the Turdus mandarinus split is captured fully?
I initially found it rather confusing that the sequence adopted for Turdus by H&M (based upon Nylander et al 2008) results in T merula sensu lato spanning seven pages...
  • Turdus merula Eurasian Blackbird: p622
  • Turdus mandarinus Eastern Blackbird: p624
  • Turdus simillimus Indian Blackbird: p627
  • Turdus maximus Tibetan Blackbird: p628
 
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I initially found it rather confusing that the sequence adopted for Turdus by H&M (based upon Nylander et al 2008) results in T merula sensu lato spanning seven pages...
  • Turdus merula Eurasian Blackbird: p622
  • Turdus mandarinus Eastern Blackbird: p624
  • Turdus simillimus Indian Blackbird: p627
  • Turdus maximus Tibetan Blackbird: p628

That's probably why:
"...I'll arrive late tonight, Blackbird, bye bye.."
as sung by the immortal Ella.
MJB
 
i don't think the Turdus mandarinus split is captured fully?

Yeah... I should have called the H&M4 version "Turdus merula et al." instead. But the document I posted just maps H&M3 species to H&M4 taxa, which may be species groups or subspecific forms. The other half of the question is mapping H&M4 species to H&M3 taxa (if such a mapping exists) -- I will see about posting that mapping in a few days.
 
The other half of the question is mapping H&M4 species to H&M3 taxa (if such a mapping exists) -- I will see about posting that mapping in a few days.

I've just posted that document:

http://members.shaw.ca/Claphams/Birds/HandM4to3.html

There are several dozen new species in H&M4, so they don't map to anything in H&M3. There are also a few cases where a species in H&M4 doesn't map cleanly to something which could be called a "taxon" in H&M3, so those species don't appear to map to anything in H&M3 either.

Example: Puffinus lherminieri (Audubon's Shearwater) consists of subspecies lherminieri, loyemilleri, baroli, and boydi in H&M4. The first two of them are part of Puffinus lherminieri in H&M3, and the last two are part of Puffinus assimilis.
 
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