BIRDS OF THE COLNE VALLEY IN 1925 AND I926. 21 of buildings known as Wivenhoe. From this little town to the sea commercialism has not laid a heavy hand on the amenities of the river. The estuary may be viewed to best advantage by tramping down the west bank from Wivenhoe seawards. This view is not without its picturesque aspect for the prospect is bounded by the well-wooded slopes which rise from the east bank, and a land-locked appearance is completed by the trees of Mersea, which protrudes across the mouth of the river. It is true that the railway follows closely the east bank from Bright- lingsea to Wivenhoe and that the ambitious townspeople of the former have created a long promenade, but these features do not seriously interfere with such a view as described. The only jarring note on the west bank is the ballast quay, close to Wivenhoe. Considered Ornithologically, the area would not rank high if the course of the river only were taken into account. This disadvantage is fully compensated for by the creeks, such as Geeton, Ray and St. Osyth Creeks and Pyefleet Channel, and the wide stretches of attractive marsh in their vicinity. Whilst not forgetting that the remarkable Old Hall marshes were included in my observations on the Blackwater the Colne area is probably the most important in the county as a breeding centre. At no time did I see such a wealth of bird-life as was recorded from the Blackwater or the Stour (especially the latter), but in spite of that fact the Colne is an exceedingly interesting valley. Let us consider the physical features as they affect bird- life. The shortness and lack of width of the river is of some interest in this connection ; then we have the mud of the river and creeks, and thirdly, the shingly nature of the coast from Sandy Point seawards. Other aspects might be raised, but for the present purpose it will be sufficient to consider these three associations. The shortness and narrowness of the river are probably reasons for winter bird-life not being more abundant, as the water could easily be commanded by guns from both sides. Beyond the confines of the river there is no protection for the winter birds. Usually one finds that the severer the weather the greater the number of birds, but in the Colne area it was otherwise. Visiting the estuary after some severe weather I expected to find an increased bird-population, but to my surprise I found the number of birds much reduced. Probably the district is so exposed that the birds are driven off in hard weather. The other two factors,