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 I20 Bird -Lore more numerous in early September, and many remain, with a few Barn Swallows, into October, but the latter are never conspicuous at this roost. Martms and Bank Swallows are only accidental visitors to this roost. The Whitebreasts remain numerous to the middle of October, and small detachments linger even a week longer. Most of the Eaves that have been gathering on the sunflowers before 6 a. m. are still there at 8 a. isi., and the Whitebreasts are also on the lotus yet ; but an hour later, when the sun has heated the marsh and started the winged insects on their aerial mission, the time for activity has arrived, and the meetings are adjourned, the birds dispersed. We, too, will adjourn, with the promise to be back for another meeting in the evening. When migration is well under way, the collecting of the Eaves and Whitebreasts begins early in the evening ; in fact, large droves are met at all hours of the day, play- fully gyrating in the blue heavens above, or describing endless curves upon the glittering marsh beneath. The Roughwings are seldom seen in the marsh in daytime. As soon as they leave the roost at early dawn, they hurry away to their accustomed haunts along the water courses in the timber, where they collect on the branches of a dead tree on the bank, if possible over water. There they sit, soon after daybreak, fifty to one hundred together, silent and lost in medi- tation, patiently awaiting the dissipation of the vapory dimness, the signal for activity. They are greatly attached to these meeting- places, and resort to them often in daytime as well as in the even- ing. Indeed, these gatherings of Roughwings on certain dead trees along our woodland lakes and streams are quite a feature of the landscape from July till October. Often their ranks are considerably swelled by an admixture of other Swallows — oftenest the Bank Swal- lows, who join them on their entomologizing excursions, and find it congenial to spend some time on the same perch with their gentle cousins. In fall migration, the different kinds of Swallows like to mix, hunt and rest together, and it is nothing rare to find four or five species sitting side by side. To be sure of a full view of the whole performance, we are in the marsh as early as 5 p. m., and take a stand west of the roost to have a good light, and also to be in a position where we can overlook part of Maple Lake, over which a large number of Swallows take their way. Indeed, we find them already plentiful, and watch their actions. A few dozens are sitting on the plant stalks projecting from the water, mostly Whitebreasts. From the west comes a pretty steady stream of Eaves. When they reach the spot where the Whitebreasts are gathering now, they pause a moment, and, hovering, take a drink, several at once, after which