Many bird species are migratory. Learn the feeding habits of wildlife. For example, some animals only feed at night and marine birds use the tides in their daily feeding. A good pair of binoculars or a spotting scope will open up a whole new world. With a twenty power spotting scope it is possible to see a mountain goat standing 1.5 miles away.
Weather is unpredictable in Washington state.
On the westside, you should plan for rain any time of the year. Consult tide charts, carry good maps, enough clothing, food and water to survive over night if necessary. Move slowly and quietly. Movement will scare animals and birds away. Be still and observe.