BIRD NOTES OF THE STOUR 329 Common Sand- piper Bar-tailed Godwit Black-tailed Godwit Avocet Curlew Whimbrel Lapwing Golden Plover Grey Plover Ringed Plover Oystercatcher Stays in the vicinity a few weeks each spring. No breeding record. Large flocks usually seen each year during September/October, after which small parties appear throughout the winter. Occurs most years in very small parties. Seen on one occasion in September. Common, but no very large flocks have been observed. 50-100 birds being about average. Seen or heard each year during August/ September. Common all the year round. Often in large flocks in winter. Breeds in small numbers. Uncommon visitor on shore line, but passes through during migration. Occurs every year in small numbers in winter and during passage. Has been recorded every month but no breeding record. Present in small numbers throughout the year. Has bred. Has been recorded during every month, but numbers greatly increase during winter. Distributed thinly throughout the entire estuary. Occurs in all stages of maturity usually at mouth of estuary. Single birds during winter months. A few specimens in various stages of plumage are usually present at all seasons. Commonest gull of the estuary. A few specimens occur each year, a dead one being picked up this year in January. Regular spring and summer visitor. Breeding suspected but not proven. Occurs most years during August. Seen most years. No nesting record but strongly suspected. Has been seen on several occasions in Spring and late Summer. Single specimens have occurred regularly. Has been found "wrecked" in the Manningtree area. Oiled specimens are found each year. A live oiled specimen was found in 1959. Single birds appear most years. Common Gull Herring Gull Lesser Black- backed Gull Greater Black- backed Gull Black-headed Gull Kittiwake Common Tern Arctic Tern Little Tern Black Tern Little Auk Puffin Razorbill Guillemot Black throated Diver Red-throated Diver Common than the Black-throated, parties each year. Seen in small