Natal dispersal in the Nuthatch

摘要: Between 1970 and 1983, more than 1500 Nuthatch nestlings were banded in an area of about 400 km2. By regular trapping sessions at feeding sites checking roosting breeding birds, 55 them recaptured within the study (3.6%). Dispersal distances varied between 36 m 11 km, with a median around 1 km. We found no difference dispersal distance males females, nor young from early late broods. The absence sexual bias is explained by symmetry territorial behaviour sexes. An analysis movements after first recapture showed evidence for birds' summer.