Jane Turner
Well-known member
Might help with origin too - though the 1st Lord Derby interloper was from Tunis!
11 out of 22 adults from Europe retained old primaries (mainly p10 OUTER) only, but only 3 out of 42 North African birds (p10 only), probably indicating longer moult season of latter (perhaps more often starting during nesting). More information on timing and duration of moult needed.
Also - have a look at the head shape and bill shape in the second photo down here
http://www.portlandbirdobs.org.uk/oi_pallid_swift_121111.htm
11 out of 22 adults from Europe retained old primaries (mainly p10 OUTER) only, but only 3 out of 42 North African birds (p10 only), probably indicating longer moult season of latter (perhaps more often starting during nesting). More information on timing and duration of moult needed.
Also - have a look at the head shape and bill shape in the second photo down here
http://www.portlandbirdobs.org.uk/oi_pallid_swift_121111.htm
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