Wednesday, 8 May 2019

Shrimp Cottage case study

This case study shows two things: just how small a space a swift can use for a nesting place and how to provide nesting places when roofs are repaired.

by Alan Collett, Aldeburgh's Amazing Swifts

Swifts were seen entering a nest site on a number of occasions in 2018. The owners were advised and asked to contact us should they consider renewing their roof at any time. This they did in February 2019.

Following discussions with the roofing contractors, we were allowed to be present as they removed the pantiles. We were expecting to find the nest within the roof space but actually found it 30cm up the roof slope resting on the narrow batten which supported the tile.

The Swifts had been climbing up the roof felt over the first batten under the arch of the pantile.

 It had then turned left under the tile to the adjacent arch and made its nest on the batten - possibly on an old sparrow’s nest. Cramped and hot!

The headroom would have varied between about 30mm and, perhaps 85mm at the high point of the tile. The headroom over the nest itself may have been about 50mm.

We were planning to reinstate the nest in the same location but as we couldn’t guarantee the original access route to the nest, we looked to re-site the nest within the box section behind the fascia using the same entry point.

The existing entry point was lowered slightly and then built up at the sides to produce a correctly sized entrance hole, over which the felt would lay. The route up the roofing felt was then restricted and the bird ‘made’ to go into the box section behind the fascia and above the soffit with a ramp leading down to the relocated nest.

The felt was trimmed to allow access to the hole and the pantiles replaced.

Another nest site was then created further along the roof.

Time will tell how successful this will have proved, but it does demonstrate that with the cooperation of owners and contractors, a place for wildlife can be incorporated into a building without risking the integrity of the roof.

Our thanks to the owners of
Shrimp Cottage Aldeburgh
and 3A Roofing Ltd Ipswich
A "bridge" has been installed across the gutter
in front of the entrance

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