Volunteers check for the materials used in making nests, count the number of eggs, watch for hatching and wait for the number of young birds to fly.
(Volunteers; check; for the materials) (the materials; used; in making nests) (the number of young birds; to fly; ) (Volunteers; count; the number of eggs)
Volunteers the materials the number of young birds Volunteers
check used to fly count
for the materials
in making nests
the number of eggs