Bird Nests After constructing bird nests, the youngsters place the nests in their site and try to locate and identify each others' nests.
(the youngsters; place; the nests; in their site; T:After constructing bird nests) (the youngsters; try; to locate and identify each others' nests; T:After constructing bird nests)
the youngsters the youngsters
place try
the nests in their site T:After constructing bird nests
to locate and identify each others' nests T:After constructing bird nests