14 
NESTS AND EGGS OF 
dark eggs, where one or two white examples have been found among 
others of the normal color in the same nest-complement. But a single 
brood is j)ositively known to be raised, although cases have come under 
our observation of nests with fresh eggs as late as the 15th of August — 
possibly the work of birds whose early efforts had been frustrated by 
enemies, or by some accident. i 
