House martin nests

Iolo visits Pembrokeshire and finds out where house martins nested before they began using the eaves under houses. There are only half a dozen locations where the birds still nest naturally on sea cliffs using mud and grass to attach a ball to the side of the cliff. The nest is then lined with feathers and can take up to two weeks to construct.

Release date:


2 minutes


Role Contributor
Series ProducerJohn Gwyn
PresenterIolo Williams

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