To Build a Little Home for Two - or Three, or Four, or More ... It's time for the birds' urgent business of finding a nook, cranny or crotch in which to build a nest ready for the breeding season. How is the site chosen? Does the cock or the hen build the nest? And why are there so many different designs?
Introduced by PETER FRANCE Producer JOHN HARRISON
Series producer DILYS BREESE BBC Bristol