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Work done in the Warsaw area in the December — early April periods of the years 1994-96 involved the capture, measurement and weighing of 862 Great Tits (of which some were caught and measured many times). Studies were centred on old broad-leaved forest and nearby settlements. The mean wing lengths of males and females were 76.1 and 73.1mm respectively (SD of 1.5 and 1.3). A method was proposed by...
923 Great Tits were weighed and measured in Central Poland in the years 1992-1996, while recaptures took the total number of checks to 1828. Assessments of fatness in the birds followed accepted procedures in being confined to quantities of furcular and abdominal fat. The Great Tits were found to lay down reserves of fat in a different way to those described previously for Passeriformes. Moreover,...
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