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Article
David Lack ; John Gibb ; D. F. Owen 1957-06-01Proceedings of the Zoological Society of London, 128(3)1 In most years the mean weight of nestling Great and Blue Tits was lower in larger than smaller broods, but it was similar in 1948, when food was exceptionally abundant. 2 In most years, the commonest clutch of the Great Tit was nine or ten, an[...]
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John Gibb ; P. H. T. Hartley 1957BRITISH BIRDS, 50
Article
John Gibb December 1, 1957Bird Study, 4(4)
Article
John Gibb 1956-07-01Ibis, 98(3)Summary. 1 This paper describes the food and ecology of a few Rock Pipits, mainly in Cornwall in winter. 2 Rock Pipits prefer exposed to sheltered coasts. Their average density in favourable habitats was ca. 8 pairs per mile of coast. 3 Rock Pip[...]
Article
John Gibb 1956-07-01Ibis, 98(3)Summary. 1 This paper deals with the Great Tit, Blue Tit, Marsh Tit, Willow Tit, Black-capped Chickadee and Plain Tit. All species are territorial in the breeding season, but show a wide variety of territorial behaviour in winter, correlated wit[...]
Article
John Gibb 1954-10-01Ibis, 96(4)1 The feeding habits of the titmice, Treecreeper and Goldcrest were studied in a mixed broad-leaved wood near Oxford, from April 1950 to August 1951, by means of repeated standard observations. 2 The proportion of time spent feeding varied inver[...]
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Article
John Gibb 1951-01-01Ibis, 93(1)1. Observations on Malta were made from August 1941 until July 1945. 2. The typical species breeding in the major inland and coastal habitats are described. 3. Only 18 species breed regularly in the islands. The number of breeding species on Mal[...]
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John Gibb 1950-10-01Ibis, 92(4)Summary. 1 The breeding biology of Parus major and P. caeruleus was studied in 1947–49 in a mixed deciduous wood, near Oxford, in which 200 nestboxes were erected (density about two per acre). 2 The combined Great and Blue Tit population rose fr[...]
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John Gibb ; B W Tucker 1947BRITISH BIRDS., 40
