HETEROCHROSIS IN ESSEX BIRDS AND THEIR EGGS. 189
Red-throated Diver. Colymbus stellatus Pontopp.
Complete .. 0
Complete partial 0
Partial .. .. 1
Total .. 1
Ref.: Zoologist, 1862, p. 8002.
Wood Pigeon. Columba p. palumbus L.
Complete .. 1
Complete partial 0
Partial .. .. 2
Total .. 3
Ref.: The Birds of Essex (Christy); The Field, vol. 95, p. 266;
A History of the Birds of Essex.
Golden Plover. Charadrius apricarius (sub. sp.?).
Complete .. 0
Complete partial 0
Partial .. .. 1
Total .. 1
Ref.: The Field, vol. 37, p. 359.
Lapwing. Vanellus vanellus (L.).
Complete .. 0
Complete partial 1
Partial .. 1
Total .. 2
Ref.: A History of the Birds of Essex ; The Field, vol. 153, p. 72.
Knot. Calidris c. canutus (L.).
Complete .. 1
Complete partial 0
Partial .. .. 0
Total .. 1
Ref.: Zoologist, 1851, p. 3116.