Now although the sparrow is very willing to feed on bread-crumbs and seeds, and save itself the trouble of hunting for its dinner, by a wise provision of nature the little ones, until they are fully fledged, can eat only worms and small flies and bugs. As the sparrows have three or four broods during the warm weather, they always have little ones to feed at the very season when worms and other insects destructive to vegetation are the most plentiful. An English naturalist states that in watching a pair of sparrows feeding their little ones, he saw them bring food to the nest from thirty to forty times every day, and each time from two to six caterpillars or worms were brought. It is easy to see from this estimate how quickly the tree worms would disappear, as proved to be the case in the cities where the sparrows were set free. A very few years after they were introduced not a worm was to be seen. The trees now grow undisturbed in their leafy beauty all through the summer, and many children will scarcely remember the time when their mothers went about the streets where shade trees grew carrying open umbrellas in sunny days and starry evenings to protect themselves from the constantly dropping worms. It is no wonder that every one is gratefully affectionate to the sparrow. They are very social little birds, and are entirely happy amid the noise and dirt and confusion of the crowded street. They are bold and saucy too, and will stand in the pathway pecking at some stray crust of bread until nearly run over, when they hop away, scolding furiously at being disturbed. They are fond of bathing, and after a rain may be seen in crowds fluttering and splashing in the pools of water in the street. The cold winter does not molest them. They continue as plump and jolly and independent as ever, and chirp and hop about as merrily on a snowy day as during summer. In the New York city parks these little foreigners are carefully provided for. Prettily built rustic houses may be seen all over Central Park, put up for their especial accommodation. During the summer, when doors and windows are open, the sparrows hold high revels in the Central Park menagerie. They go fearlessly into the eagle's cage, bathe in his water dish, and make themselves very much at home. In the cages occupied by pigeons, pheasants, and other larger birds, the sparrows are often troublesome thieves. They can easily squeeze through the coarse net-work, and no sooner are the feed dishes filled with breakfast than they crowd in and take possession, scolding and fluttering and darting at the imprisoned pigeons and pheasants if they dare to approach.