Vv. Pravosudov, CLUTCH SIZE AND FLEDGING RATE IN THE EURASIAN NUTHATCH BREEDING IN NATURAL CAVITIES IS UNRELATED TO NEST CAVITY SIZE, Journal of field ornithology, 66(2), 1995, pp. 231-235
Clutch size and fledging rate of the Eurasian Nuthatch (Sitta europaea
) breeding in natural cavities and their relation to nest cavity param
eters were studied in northeastern Siberia. The size of 25 natural cav
ities measured bore no relationship with either clutch size or fledgin
g rate.