Sometimes he even went down to the corner where the farmer had tobacco plants growing, and showed his yellow spots to the Tomato Worms there. He never went anywhere else, for these worms do not care for other things to eat. Everywhere that he went the Tomato Worms exclaimed: "Oh! Oh! What beautiful yellow spots! What wonderful yellow spots!" When he flew away they would not eat for a while, but rested on their fat pro-legs, raised the front part of their bodies in the air, folded their six little real legs under their chins, and thought and thought and thought. They always sat in that position when they were thinking, and they had a great many cousins who did the same thing. It was a habit which ran in the family.
When other people saw them sitting in this way, with their real legs crossed under their chins, they always cried: "Look at the Sphinxes!" although not one of them knew what a Sphinx really was. And that was just one of their habits. This was why the Hawk-Moths were sometimes called Sphinx-Moths.
It was not kind in the Hawk-Moth to come and make the Tomato Worms discontented. If he had stayed away, they would have thought it the loveliest thing in the world to be fat green Tomato Worms with two sorts of legs and each with a horn standing up on the hind end of his body. That is not the usual place for horns, still it does very well, and these horns are worn only for looks. They are never used for poking or stinging.
Before the Hawk-Moth came to visit them, the Tomato Worms had thought it would be quiet, and restful, and pleasant to lie all winter in their shining brown pupa-cases in the ground, waiting for the spring to finish turning them into Moths. Now they were so impatient to get their yellow spots that they could hardly bear the idea of waiting. They did not even care about the long, slender tongue-case which every Tomato-Worm has on his pupa-case, and which looks like a handle to it.
One day the Tomato Worms told the Ruby-throated Humming-Bird about all this. The Humming-Bird was a very sensible fellow, and would no doubt have been a hard-working husband and father if his wife had not been so independent. He had been a most devoted lover, and helped build a charming nest of fern-wool and plant-down, and cover it with beautiful gray-green lichens. When done it was about as large as half of a hen's egg, and a morning-glory blossom would have more than covered it. The lichens were just the color of the branch on which it rested, and one could hardly see where it was. That is the nicest thing to be said about a nest. If a bird ever asks you what you think of his nest, and you wish to say something particularly agreeable, you must stare at the tree and ask: "Where is it?" Then, when he has shown it to you, you may speak of the soft lining, or the fine weaving, or the stout way in which it is fastened to the branches.
After this nest was finished and the two tiny white eggs laid in it, Mrs. Humming-Bird cared for nothing else. She would not go honey-hunting with her husband, or play in the air with him as she used to do. He tried to coax her by darting down toward her as she sat covering her eggs, and by squeaking the sweetest things he could think of into her ear, but she acted as though she cared more for the eggs than for him, and did not even squeak sweet things back. So, of course, he went away, and let her hatch and bring up her children as she chose. It was certainly her fault that he left her. She might not have been able to leave the eggs, but she could have squeaked.
Now that the Ruby-throated Humming-Bird had no home cares, he made many calls on his friends. They were very short calls, for he would seldom sit down, yet he heard and told much news while he balanced himself in the air with his tiny feet curled up and his wings moving so fast that one could not see them.
When the Tomato Worms told him how they felt about the Hawk-Moth's yellow spots, he became very indignant. "Those poor young worms!" he said to himself. "It is a shame, and something must be done about it."
The more he thought, the angrier he became, and his feathers fairly stood on end. He hardly knew what he was doing, and ran his long, slender bill into the same flowers several times, although he had taken all the honey from them at first.
That night, when the sun had set and the silvery moon was peeping above a violet-colored cloud in the eastern sky, the Ruby-throated Humming-Bird sat on the tip of a spruce-tree branch and waited for the Hawk-Moth.