At a field site in Belgium, the mean size of Parus major showed a decreasing trend in the period 1962–1975.
← all excerpts
Evolution of enlarged body size of coal tits Parus ater in geographic isolation from two larger competitors, the crested tit Parus cristatus and the willow tit Parus montanus, on six Scandinavian islands.
2
—
—
The sentences
ater is statistically highly significant in all measurements except for the depth and width of the bill of P. cristatus ( Tables 2 - 4 ).