However , marbled murrelets may nest in remnant old - growth trees or groves that are surrounded by younger trees .
Marbled murrelets more commonly occupy stands greater than 500 acres ( 202 ha ) than stands less than 100 acres ( 40 ha ) .
Marbled murrelets may nest in remnant old - growth trees or groves that are surrounded by younger trees .
Marbled murrelets more commonly occupy stands greater than 500 acres ( 202 ha ) than stands less than 100 acres ( 40 ha ) .