92 EPPING FOREST. Blue Titmouse. Common all the year. Cole Titmouse. Not uncommon in gardens, as well as in some parts of the Forest. Harsh Titmouse. Common in Wanstead Park and in low- lying parts of the Forest. Its name is misleading, as it is not a marsh bird in any sense. Longtailed Titmouse. Resident and not uncommon. Fam- ilies of ten or more keep together throughout the winter and flit from tree to tree, scouring them for insects. They never come to the lump of fat which is put out- side my house for the other titmice. Sand-Martin. Numbers breed in holes in the railway cut- LONGTAILED TITS. ting between Leytonstone and Wanstead. They are the earliest of the swallows to appear, often arriving in March. House-Martin. Not so common as they ought to be. The vast number of sparrows in the neighbourhood is hostile to their increase. A friend and neighbour increased the number of house-martins' nests on his house from two to ninety, simply by waging unsparing war on the sparrows. Chimney Swallow. In the late summer these birds gather in thousands to roost in the reed-bed in the pond in Cook's Folly. This seems to be the general rendezvous for the district, and at sunset they may be seen flying in small companies from every direction towards this point. The confused noise as they swarm like bees to gain a foothold among the reeds is most remarkable. In Au- gust 1855 a pure white swallow was observed at Epping.