Common swifts in parts of Asia
Recently we have been focussing on the call for observations from Africa. It is still valid: Observations from the winter residence of the common swift are still very welcome.
At the same time, your reports of swifts living to the east of the area called the north-western Palaearctic haven't gone unnoticed.
For this project it is difficult to define the geographic range of the common swift, subspecies apus, to the east. So far, I haven't been able to find any recent study with a critical discussion of their supposed breeding range in parts of Asia. Is this apparent lack of literature due to the different languages spoken in these countries?
Also, in eastern Europe and parts of Asia, there seem to live a number of varieties of common swifts that may be difficult to tell apart when observed while flying.
In order to allow observations of Apus apus, subspecies apus, in parts of Asia to this project, I need verified informations about their abundance in this vaste area.
If you know of any recent studies focussing on Apus apus subspecies apus that discuss e.g. finds of hurt or dead birds, ring finds or the results of observations of birds with senders, please don't hesitate and let me know!
