On the Estuary's shores, European starlings are aggressively competing for nesting holes, displacing titmice, nuthatches, and other birds;
(European starlings; are aggressively competing; for nesting holes, displacing titmice, nuthatches, and other birds; T:On the Estuary's shores)
European starlings
are aggressively competing
for nesting holes, displacing titmice, nuthatches, and other birds T:On the Estuary's shores