Yes there is confusion on this aspect. I think I
recall Stephen Debus on one or more of his many book reviews criticising (I
think David Hollands) for his use of the word "fledging" as relating
to the process of growing first set of feathers. Fledging is supposed
to mean the time of leaving the nest. So it is a nestling till it leaves the
nest, then it is a fledgling. Of course in most birds they become feathered and
then they leave the nest when the first set of feathers are close to complete.
So it basically happens at about the same time. However precocial
birds leave the nest when newborn and only downy, in most cases long before
their first set of feathers have started. In which case it seems backwards.
So yes it is going to be confusing.
Also sorry but I see that I goofed below,
referring to "David Holland's book", it should be "David Hollands'
book", as of course I later noticed that is his name is David Hollands, not
David Holland. Maybe thinking of Jack.
Philip
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