Mitcham Common is 182 hectares (460 acres) of common land situated in south London. It is predominantly in the London borough of Merton, with parts straddling the borders of Croydon and Sutton. It is designated a Site of Metropolitan Importance for Nature Conservation.
In feudal times, the poorest, least productive soil in a parish was designated as common land available for parishioners to graze animals and cut turf and timber for fuel. Members of this community with these rights were known as commoners. However, in the 19th century when material for road building became a valuable resource, the old grazing land was replaced by a series of pits for gravel extraction.
These works reached such a proportion that public opposition, led by George Parker Bidder QC, culminated in the protection of the common under the Metropolitan Commons Act and the cost of its maintenance was split between the parish councils of Mitcham, Beddington, Wallington and Croydon according to the proportion of the common within each parish boundary.
Mitcham, now part of the London Borough of Merton bears the majority of the costs, with the remainder going to the London Boroughs of Croydon and Sutton. These funds support a warden and three assistants. Each council is represented by four nominated members of The Board, elected every two years.
Geography and environment
The course of the Thames has gradually altered, exposing gravels that were initially colonised by grasses and other Flowering Plants. Over time, woody species slowly overwhelmed these early colonisers, developing a loose scrubby vegetation that became denser until woodland had developed. Early humans were responsible for clearing trees and suppressing their regeneration by grazing cattle and cutting turf and timber for fuel.
In the late 19th Century these practices ceased and woodland was allowed to regenerate. This process allowed a succession from grassland, through a series of intermediate stages, to woodland.
The river gravels are well drained and strongly acidic, leading to a hostile environment in which plants have to withstand occasional drought and nutrient deficiency. However, considerable areas have acquired foreign soils during landfill programmes, whilst ploughing for agriculture during World War II and numerous pipe laying programmes have brought trapped nutrients to the surface. The result is a patchwork of soil types, each providing different plant and animal habitats. As the grassland reverts to woodland, the various stages in this process create further habitats.
The Seven Islands pond is the largest of the ponds on the common, and was created as the result of gravel extraction during the 19th century. The most recent pond to be created, Bidder's pond, was created in 1990 and named for George Parker Bidder.
(note above taken from Wikipedia)
Birds:Usual species expected here of this habitat: Hobby, Common Buzzard, Kestrel, Common Whitethroat, Chiffchaff, Blackcap, Linnet, Reed Bunting, Reed Warbler can be expected over several visits. Swifts and Swallows in summer. Pair Little Grebe raised 2 young on 7 Islands Pond in 2019. Pheasant occasionally seen golf course area. A Flock of seagulls can often be seen rising from Beddington Farm, from Mill Hill - so chance of seeing rare species if lucky.
Former breeding Lesser-spotted Woodpecker but no more and Skylark one singing May 2018 but nesting area (Mill Hill) over used by dog walkers and picnickers. Barn Owl bred (only one year) in dead tree at Mill Green about 5 years ago.
Rarities: Long-eared Owl and Barn Owl been seen in winter, White Stork seen over Beddington Farm 2016.
Wednesday 12 Feb 2020 Short-eared Owl, 400+ Jackdaw, 5 Redwing, 2 Kestrel
Monday 8 June 20: Quail flushed but I don't know precise area. Reported by Birdguides.
Mammals: Rabbits seen regularly in Mill Hill area.
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