In a message dated 8/14/10, [log in to unmask]
writes: << My old Vermont Breeding Bird Atlas lists 7/1 as the last
probable date for breeding activity for both species. Does anyone
know the survival rate of such late broods, compared with earlier
Grand Isle VT Cliff Swallow Nests.
2002: Nests #1 to 5 fledged young 3-July to 12-July.
22 eggs; 20 hatched; 15 to 18 fledged.
#5, 6, 8, 10, & 11 held nestlings 20-July to 3-Aug.
18 eggs; 14 hatched; 9 to 10 fledged.
03-August. Three Cliff Swallow eggs hatched.
Expected fledge date -- about 26-August.
2009 Late fledge date:
25-Aug -- first of two young fledged.
26-Aug -- second young fledged.
Cliff Swallows slept in the nest 27-Aug.
26 & 27 July 3 eggs hatched.
17-Aug 2 smaller nestlings dead in nest.
19-Aug hand fed the survivor.
20-Aug 1 adult returned to feed the survivor.
21-Aug. 1 fledged.
08 Aug 3 young in nest all day
09 Aug Last of the 3 young fledged by Noon.
10 Aug 1 young visited nest area
Nest #8 First of four young fledged 13-August.
The other three young fledged by August 18th.
Nest #10 Three eggs; Two nestlings hatched 30-July.
Nests #7&11 A 5-day-old nestling fell 2-Aug;
Placed nestling in nest #10. It fledged 17-Aug.
Nest #12 Single egg hatched 9-August.
#12's Nestling fell 18-Aug. Placed the nestling in nest #10.
#12 died 26-Aug. about 24 hours after two nest mates fledged.
The two adults feeding the three occupants of #10 did not
return after their own two offspring fledged early 25-Aug.
Fifth nest -- eggs hatched circa 22-July.
Dave Hoag, Grand Isle</HTML>