Tuesday, July 30, 2013 at 9:15AM Passer domesticus domesticus
Not numerous, and is absent from whole villages, though present in small numbers in all large villages and towns. Fluctuates and does not appear to increase permanently. Has bred Caldey and Ramsey, but casual on other islands.
R.M.Lockley, G.C.S.Ingram, H.M.Salmon, 1949, The Birds of Pembrokeshire, The West Wales Field Society
Friday, August 24, 2012 at 9:20PM The House Sparrow is known to most people, its extrovert character and strong association with habitation making it difficult to overlook. Nests are built in crevices, mostly in buildings but sometimes well-woven nests are built in shrubbery.
Those who took part in both the 1984-88 and 2003-07 surveys will have become aware of the increased number of breeding House Sparrows. Their distribution expanded by 11% and some colonies have grown. At the same time the urban numbers have decreased while suburban birds have flourished. Although modern and renovated housing has not provided suitable nesting holes, older stock and in particular farm buildings have provided favourable conditions. Between 1994 and 2007 the BBS calculated there was a 93% increase in Wales. The estimate of 3,500 pairs breeding in Pembrokeshire in 1988 is considered to have fairly represented the situation at that time. Applying the increase noted by the BBS to the distribution found by the 2003-07 survey, results in a new estimate of 7,500 pairs breeding in the county at the end of 2007.
Graham Rees
Fieldwork 2003-07 (based on 490 tetrads)
Red = breeding confirmed = 306
Orange = breeding probable = 79
Yellow = breeding possible = 27
Total tetrads in which registered = 412 (84.1%)
Wednesday, December 28, 2011 at 10:46AM Breeding resident
Mathew (1894) said of the House Sparrow that it was "a common resident but rather scarce in the mountain districts" while Lockley et al. (1949) considered it was "not numerous", being absent from some villages. Today it is found throughout Pembrokeshire in close association with man's settlements, being absent from woodland and the mountain tops. House Sparrows are not usually found on the offshore islands, but they have bred on Ramsey (Lockley et al.) and on Skomer, in 1965 and 1966, and were resident on Caldey until about 1985, since when they have become sporadic. They are well distributed about the towns but sparse in many rural areas, in which they become concentrated where non-intensive poultry rearing makes an abundance of food available, Llanfallteg West being a good example. They flock around the fields and hedges during the autumn. An estimate of eight pairs per tetrad in rural and 40 pairs per tetrad in urban areas gives a county population of about 3,500 pairs.
House Sparrows wander as far out as Skokholm, where they were recorded in 34 years between 1933 and 1992, but have not been recorded from any of the remoter isles.
Fieldwork 1984-88 (based on 478 tetrads)
Red = breeding confirmed = 266
Orange = breeding probable = 50
Yellow = breeding possible = 55
Total tetrads in which registered = 371 (77.6%)
Friday, November 11, 2011 at 3:31PM 
Red = breeding confirmed
Orange = breeding probable
Yellow = breeding possible
Sunday, October 9, 2011 at 4:57PM 
The BTO winter atlas showed that House Sparrows were present in most 10km squares during the winters of 1981-82, 1982-82 and 1983-84.
The darker the colour, the higher the relative total count for each 10km square. The darkest blue represents over 65 birds.
The winter distribution was similar to the breeding range plotted in the 1970s.
Graham Rees
Saturday, December 18, 2010 at 9:07AM Species account from M Mathew, 1894, "The Birds of Pembrokeshire and its islands"
