My companion, however, was not so philosophical or so cool. She never could withstand the flit of a warbler wing; she would follow for half a day the absurd but enchanting little trill; and she regularly went mad (so to speak) at every migration, over the hundred or two, more or less, varieties that made this wood a resting-place on their way. Now, I could resist the birds by never looking at them, but I could not resist my friend's enthusiasm; so when she started on a warbler trail, I generally followed, as a matter of course. And I admit that the blue, to which we shortened his name, was a beauty and a charming singer.

I passed quietly up the road toward the continued low calls, and soon saw the student, not far from the path, in a clearer spot than usual, sitting against a maple sapling, with her four-footed protector at her feet. When I came in sight she beckoned eagerly but silently, and I knew she had found something; probably the nest, I thought. As quietly as might be under the circumstances (namely, a passage through dead leaves, brittle twigs, unexpected hollows, etc.), I crept to her side, planted my camp-stool near hers, and sat down, in obedience to her imperious gesture.

"Now look," she whispered, pointing to a nest in plain sight.

"Why that's the redstart nest we saw yesterday from the road," I answered in the same tone, somewhat disappointed, it must be said, for redstart nests were on about every third sapling in the woods.

"Yes; but see what's going on," she added, excitedly.

"I see," I replied; "there is a young bird on the edge of the nest and its mother is feeding it;" and I was about to lower my glass and ask what there was surprising about that, when she went on:—

"Keep looking! There! Who's that?"

"Why that's—why—that's a chestnut-sided warbler! and—what?—he feeds the same baby!" I gasped, interested now as much as she.

"There!" she exclaimed, triumphantly, "I wanted you to see that with your own eyes, since you scorn to look at the warblers. He has been doing that ever since I left you. I couldn't bear to let him out of my sight!"