The clutch size, hatching success, and fledging success that we measured for cave swallows in northeastern Texas are comparable to those reported in southwest and central Texas both in natural caves and in culverts (Martin, 1981; Kosciuch et al.
The differences in fledging success between barn swallows and cave swallows were a result of whole brood losses.
The young then remain with the adults for 3-5 wk after fledging (Morehouse and Brewer 1968).
From 1991 through 1994 I also documented fledgling survival for a subsample of nests during the 2-3 wk period after fledging.
3) Sexual size dimorphism may already be evident prior to fledging, such that male and female chicks may have different needs during early growth, leading to differences in parental costs for rearing sons and daughters, and possibly to differences between factors affecting survival from fledging to adult age.
To study the growth curve of the chicks, in addition to weighing twice daily during the first 10 d of each month, each chick was weighed and measured every 10 d from hatching to fledging.
677) suggested no significant association between bleeding and fledging
This mortality presents a paradox in that parents appear to opt for a hatching pattern that reduces fledging
success (Stoleson and Beissinger 1995).
For the first week after fledging
, distances of movements were 50% lower than those reported elsewhere in Arizona (ca.
Lots of our garden birds are nesting and their chicks fledging
at this time, so it's important that they are not disturbed.
Prior to analyses, we estimated date of initiation of clutch for each nest based on direct observation or by back-calculation from dates of hatching or fledging