"Breeding notes and habits of Circus Hudsonicus Song of Vireo Novboracensis, Middlesex Co., Mass. May 21 fine & marsh hawk for some time. He evidently had a mate sitting on the nest in a certain portion of the meadow for at regular interval of a hour or so he would approach the spot flying very high up and commences stooping down like a night hawk at each stop uttering a rather feble kee, kee, kee. While performing then revolutions his motions were most graceful and airy and buoyant; at each descent he approached closer to the earth and finally I could just catch sight of him as he rose above the bushes and plunged down again and after one or two more descents, he would appear no more, having probably alighted near his mate. I marked the spot as accurately as possible and shall visit it to morrow. The song of Vireo Novboracensis may be exactly imitated by the syllables chick, a-ri chick or sometimes chick, a-re-o. Th' chirp two can fairly out yesterday for the first time. Shunning birds an especially scarce I have seen only two. Robin's best, 4 freshess, May 22 Rained hard last night chasing off at 0:30 to day. Very warm in P.M. this reaching 62°. Spent the morning about the house doing up odd jobs (which owing to freed of work I have sadly neglected of late). After dinner drove up to the "Willows" taking "Shot." Spent all the P.M., searching for the small