Which of the following is an example of gene flow? 1.a forest fire kills 50 percent of red-spotted chipmunks in a forest community. 2.pollen from a yellow daisy travels across a stream and pollinates an orange daisy. 3.a bird with blue feathers is less camoflaged in the rainforest than a bird with green feathers. 4.mice with heavy coats are able to survive the winter better than mice with thin coats.