Meaning: Birds actively look for seeds in trees and bushes, as these are common places where seeds can be found.
Choice of Words: The sentence highlights where birds look for seeds. "Birds" are flying creatures with feathers, "search" means to look for something carefully, "seeds" are small, hard-coated structures containing a plant embryo, "trees" are tall, woody plants with branches and leaves, and "bushes" are smaller, woody plants with multiple stems.