1 c. mayonnaise
1/4 c. milk
1 tbsp. lemon juice
1/4 tsp. dill
15 1/2 oz. can salmon or tuna
1 c. chopped cucumber
1/4 c. onion rings
2 tbsp. chopped parsley
2 avocados, sliced
Lettuce

Combine first 4 items for dressing. Mix well and chill. Combine salmon, cucumber, onion rings and parsley; mix lightly. Arrange avocados on lettuce. Top with salad mixture and serve with dressing.