On comparing the hatching success between nest-types with
the traditional method, the proportion of eggs that hatched in roofnests
(62.6%) was higher than in ground-nests (28.6%) (Table 2).
Loss of eggs was greater in ground-nests (71.3%) than those on the
roofs (37.3%). Different factors, namely predation, nest damage
and hatching failure, affected hatching success in both the nesttypes,
but with different loss rate in each group (Table 2). Only
15.3% of roof-nest eggs were predated compared to 59.2% of groundnest
eggs. Roof-nests may primarily have been predated by aerial
predators, ground-nests by both terrestrial and aerial predators.