On July 3, 2022 we were with Bernardo Barreto of Birds & Nature Tours in Portugal in the Sado Estuary. We found what he referred to as the common house-martin and which iNaturalist and Birds of the World refer to as the western house-martin. They had mud nests on the side of a building. There are two subspecies and we saw the nominate ssp. urbicum.
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| Illustration from Birds of the World |
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| Range from Birds of the World. |
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