Common House Martin (Delichon urbicum)
Mike Barth Photography posted a photo:
The Common House Martin is a small migratory swallow widely distributed across Europe, western Asia, and parts of North Africa during the breeding season. It spends the winter in sub-Saharan Africa, travelling thousands of kilometres between breeding and wintering grounds each year. House martins favour open countryside, farmland, villages, towns, and suburban areas where there is access to flying insects and suitable nesting sites. They are especially associated with human structures, often nesting beneath the eaves of houses, bridges, and other buildings, although they historically used cliffs and rock overhangs before widespread urban development. Their colonies can range from a few pairs to dozens of nests clustered together.
House martins are highly social birds and feed almost entirely on aerial insects caught in flight, including flies, aphids, and small beetles. One of their most distinctive behaviours is mud collection during the breeding season. Pairs gather small pellets of wet mud from puddles, pond edges, riverbanks, or damp soil after rain, carrying them in their bills back to the nesting site. Hundreds or even thousands of pellets may be used to construct the enclosed cup-shaped nest, which is lined with grass and feathers. Mud gathering is often most intense during warm, wet weather when suitable soft mud is available. Because access to mud is essential for nest construction and repair, prolonged dry periods can negatively affect breeding success.

Β© Mike Barth Photography
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House martins are highly social birds and feed almost entirely on aerial insects caught in flight, including flies, aphids, and small beetles. One of their most distinctive behaviours is mud collection during the breeding season. Pairs gather small pellets of wet mud from puddles, pond edges, riverbanks, or damp soil after rain, carrying them in their bills back to the nesting site. Hundreds or even thousands of pellets may be used to construct the enclosed cup-shaped nest, which is lined with grass and feathers. Mud gathering is often most intense during warm, wet weather when suitable soft mud is available. Because access to mud is essential for nest construction and repair, prolonged dry periods can negatively affect breeding success.</p>


