SUMMARY
During the winters 1963/64 and 1964/65 some 700 weights of 19 species of Palaearctic migrants caught in Central Nigeria were obtained. Where there were adequate weights for analysis, mean weights in the spring were significantly heavier than mean autumn weights; mean weight gains in the spring varied from 47% (Pied Flycatcher) to 21% (Garden Warbler and Spotted Flycatcher). Individual gains were higher.
These observations were made at Vom (9° 50′ N., 8° 50′ E.), which lies on the central plateau of Nigeria at an altitude of about 4,000 feet, in the Guinea Savannah vegetational zone. The small residential area of Vom is round the periphery of the cone of an extinct volcano. The gardens have varying numbers of tall trees (mainly eucalyptus species) and ornamental shrubs. In the immediate vicinity is open grassland, with small forestry reserves and deep water‐courses filled with varying amounts of dense bushy vegetation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.