38 THE LONDON NATURALIST Meadow-Pipit (Anthus pratensis, L.).—A regular but decreasing winter visitor. British Tree-Creeper (Certhia familiaris brittanica, Ridg.).—A well established resident. British Nuthatch (Sitta europaea affinis, Blyth).—A resident, mainly recorded from Hill Wood. British Goldcrest (Regulus r. anglorum, Hart.).—A common winter visitor. After the severe winter of 1917 the numbers of this species were seriously reduced. The normal status was regained by 1920. British Great Titmouse (Parus major newtoni, Prazak).—An abundant resident. British Coal Titmouse (Parus ater britannicus, S. and D.).—A common resident. British Marsh Titmouse (Parus palustris dresseri, Stej.)—A com- mon resident. British Blue Titmouse (Parus caeruleus obscurus, Prazak).—An abundant resident. British Long-tailed Titmouse (Aegithalos c. caudatus roseus, Blyth). —A common resident. No diminution in numbers was noticed after the severe winter of 1917. Great Grey Shrike (Lanius c. excubitor, L.).—One occurrence, winter 1919-20. Red-backed Shrike (Lanius e. collurio, L.).—A not uncommon summer visitor. Frequents the open spaces. Average date of arrival May 10th. Spotted Flycatcher (Muscicapa s. striata, Pall.).—A not uncom- mon summer visitor. Average date of arrival May 13tb. Whitethroat (Sylvia c. communis, Lath.).—A common summer visitor. Average date of arrival April 24th. Lesser Whitethroat (Sylvia c. curruca, L.).—A fairly common summer visitor. Average date of arrival May 1 st. Garden Warbler (Sylvia borin, Bodd.).—A common summer visitor. Average date of arrival May 6th. Blackcap (Sylvia a. atricapilla, L.).— A common summer visitor. Average date of arrival April 23rd. Grasshopper Warbler (Locustella n. naevia, Bodd.).—Recorded in 1921 only. No nest found. Reed-Warbler (Acrocephalus s. scirpaceus, Hermann).—Only one occurrence, June 2nd, 1920. Willow-Warbler (Phylloscopus t. trochilus, L.).—The most numer- ous summer visitor. Average date of arrival April 9th. Wood Warbler (Phylloscopus s. sibilatrix, Bech.).—A local summer visitor, probably increasing. Average date of arrival May 2nd. Chiffchaff (Phylloscopus c. collybita, Vieill.).—A common summer visitor. Average date of arrival April 4th. Mistle-Thrush (Turdus v. viscivorus, L.).—A fairly common resident. British Song-Thrush (Turdus philomelos clarkii, Hart.).—A very common resident, but scarcer in winter.