And this is only because we are sticking to the species concept instead of evolutionary significant units, see for example on white-eyes
https://www.facebook.com/photo.php?fbid=550670128374622&set=a.326451930796444.78587.254203431354628&type=1&theater
Things like the Pale-breasted Illadopsis (Least Concern in the Red list) in our region occur in places such as in Ngumburuni Forest in Rufiji and formerly in the Pugu before those forests were taken down to Dar in the shape of charcoal. They are very far from each other and separated by what is euphemistically named the "mixed maize farming system" (to me a farming system would assume some level of sustainability.) There cannot be any gene flow with their west-african colleagues across its very wide range. These things will not move even if you set fire to the forest and they will eventually disappear as fragmentation and unmanagement continue.
> Message du 27/04/14 15:19
> De : "Neil and Liz Baker"
> A : tanzaniabirds@yahoogroups.com
> Copie à :
> Objet : [tanzaniabirds] Fw: Endangered Species
>
>>
>On Sunday, 27 April 2014, 9:35, MARGARET & DON TURNER wrote:
>Dear All; Tom Butynski has raised an important point regarding
> species that have very restricted ranges, in some cases known from
> only a single National Park or other protected or semi-protected
> area. This applies to all three countries, and I feel that where we
> have that situation, if the populations of those restricted species
> is considered stable, then they might best be considered Vulnerable,
> and only when we see those populations actually decreasing would they
> qualify for the Endangered category. All the species that Tom
> listed from Uganda would I feel best be considered Vulnerable for the
> time being. The same applies to several Kenya and Tanzania species
> that have very restricted ranges, but those that I have listed do
> already qualify for the Globally Endangered Category by Birdlife
> International, so they had to be included.
>
> For details of those species that at the time I placed in Categories
> A-E for the three East African countries please refer to my article
> in Scopus 32 (2013) pp 27-34. I did list all species that have been
> extirpated from the three EA countries ( Category D).
>
> Tom also raises the question of Saker Falcon which is treated by
> BirdLife as a Globally Endangered species, but which is only a
> vagrant to us, and the three East African countries are not
> considered a regular wintering area. That is why for migratory
> species I only included Madagascar Squacco Heron, Basra Reed Watbler
> and Spotted Ground Thrush all of which winter almost exclusively with
> us. For the time species I have not considered any vagrant species
> for the endangered list simply as it would take attention away from
> those resident ones that need our urgent attention (I'm not really
> sure what we in East Africa can do to help the Saker Falcon).
>
> Please keep the questions coming and keep the debate alive.
>
> Thanks and best wishes
> Don
> --
>
>
>