Publications

circannual plasma androgen levels in free-living male great tits (parus major major l.).	seasonal variations of plasma androgen levels in free-living adult and juvenile male great tits (parus major major l.) were measured by radioimmunoassay over a period of 5 years. in 4 of the 5 years a peak of androgen concentrations was observed during the breeding season (in 1 year during the prebreeding season, followed by a nadir during winter. besides these circannual fluctuations, considerable variations in plasma androgen levels between comparable behavioral periods of successive years wer ...	1985	4018565
the colonization history and present-day population structure of the european great tit (parus major major)	the colonization history and present-day population structure of the european subspecies of the great tit parus major major were studied using mitochondrial control region sequences. one major haplotype was found in all but one of the eight sampled populations from spain to northern finland. the other haplotypes differed from the common one by just a few substitutions; the overall nucleotide diversity was 0.00187 and haplotype diversity 0.8633. no population structuring was detected. the mismatc ...	1999	10383669