HETEROCHROSIS IN ESSEX BIRDS AND THEIR EGGS. 187
Wheatear. Oenanthe o. oenanthe (L.)
Unrecorded.
Complete .. 2 1 (no data)
Complete partial 0
Partial .. .. 1
Total .. 3
Ref.: The Birds of Essex (Christy).
Whinchat. Saxicola r. rubetra (L.).
Complete .. 1
Complete partial 0
Partial .. .. 0
Total .. 1
Ref.: The Birds of Essex (Christy).
Redstart. Phoenicurus p. phoenicurus (L.).
Complete .. 0
Complete partial 0
Partial .. .. 1
Total .. 1
Ref.: Studies in Bird Migration, W. Eagle Clarke.
British Robin. Erithacus rubecula melophilus Hart.
Unrecorded.
Complete .. 0
Complete partial 1
Partial .. .. 5 2 (1 symm., 1 female, red breast
retained, otherwise white, 1 June,
— 1 Dec.)
Total .. 6
Ref.: Essex Literary Jour. 1839; A History of the Birds of Essex.
British Hedge-Sparrow. Prunella modularis occidentalis (Hart.).
Complete .. 1
Complete partial 0
Partial .. .. 1
Total .. 2
Ref.: The Birds of Essex (Christy); A History of the Birds of
Essex.