Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to protect your cherry trees from birds [title] Start when birds begin to show. [step] Keep track of bird sightings in your garden or orchard, either with a formal count or by intuition. Once the number of birds starts to grow, and the fruit shows the first hint of color, it's time to protect the trees.

Ending1: Bird nests can be reached by building each tree directly on top of the other. [substeps] Stop if you see bird nests from a distance or long distances, and keep hawks, caterpillars, insects, and sphagnum moss nearby to provide shelter from winter threat. Ending2: Watch birds provide loud and startling feeders and watch bird feeds that attract animals. [substeps] Let your trees for harvest start two weeks before the fall of your maple tree. Ending3: [substeps] Keep a good log in your garden or in your kitchen that you always log. Post it everywhere you go, keeping detailed records of any birds that spot their fruit cavers. Ending4: [substeps] These scare tactics are very effective, but only last a few weeks. Starting too early may leave your trees vulnerable later, once the birds are used to your tactics.

Answer format: ending1/ending2/ending3/ending4