© Photo by Jon Hawkins – Surrey Hills Photography House Martin Delichon urbica House martins are common summer visitors, arriving in April and leaving in October. © Photo by Derek Moore They build mud nests, sometimes in small colonies, under ledges, on cliffs and, as their name suggests, under the eaves of houses. Both males and females help to build the nest, collecting mud from streams and ponds and building up layers with bill-sized pellets. They are commonly found in towns and villages although frequently seen in agricultural areas. They feed on flying insects and aphids. How to Identify House martins are glossy black above, completely white below with a white rump and a short, forked tail. Where to Find Widespread. How People Can Help House martins have suffered declines in recent years due to poor weather and the removal of nests in houses (the droppings can be seen as a nuisance). To keep populations of house martins and other birds healthy, The Wildlife Trusts are working towards a ‘Living Landscape’: a network of habitats and wildlife corridors across town and country which are good for both wildlife and people. You can support this greener vision for the future by joining your local Wildlife Trust. Did you know? House martins will return from their African wintering grounds to the same nesting sites each year. They can reuse the old nest which saves them about ten day’s work collecting mud. So don’t knock down that empty nest – you never know who might turn up to use it! Key FactsLength: 13cmWingspan: 28cmWeight: 19gAverage lifespan: 2 years Donate Donate to help support House Martins and other wildlife. Donate Similar Species Barn Owl Birds Black-Headed Gull Birds Blackbird Birds Blackcap Birds Blue Tit Birds Bullfinch Birds Buzzard Birds Canada Goose Birds Carrion Crow Birds Chaffinch Birds Chiffchaff Birds Coal Tit Birds Collared Dove Birds Coot Birds Crossbill Birds Cuckoo Birds Curlew Birds Dipper Birds Dunnock Birds Fieldfare Birds Goldcrest Birds Golden Plover Birds Goldfinch Birds Goosander Birds Great Crested Grebe Birds Great Spotted Woodpecker Birds Great Tit Birds Greenfinch Birds Grey Heron Birds Grey Wagtail Birds Hen Harrier Birds Herring Gull Birds Hobby Birds House Sparrow Birds Jackdaw Birds Jay Birds Kestrel Birds Kingfisher Birds Lapwing Birds Lesser Redpoll Birds Linnet Birds Little Egret Birds Little Grebe Birds Little Owl Birds Little Ringed Plover Birds Long-Eared Owl Birds Long-Tailed Tit Birds Magpie Birds Mallard Birds Mandarin Duck Birds Marsh Harrier Birds Meadow Pipit Birds Merlin Birds Mistle Thrush Birds Moorhen Birds Nightjar Birds Nuthatch Birds Osprey Birds Oystercatcher Birds Peregrine falcon Birds Pied Wagtail Birds Raven Birds Red Grouse Birds Red Kite Birds Redstart Birds Redwing Birds Reed Bunting Birds Reed Warbler Birds Ringed Plover Birds Robin Birds Rock Pipit Birds Rook Birds Sedge Warbler Birds Short-Eared Owl Birds Siskin Birds Skylark Birds Snipe Birds Song Thrush Birds Sparrowhawk Birds Spotted Flycatcher Birds Starling Birds Stonechat Birds Swallow Birds Swift Birds Tawny owl Birds Teal Birds Tree Sparrow Birds Treecreeper Birds Tufted Duck Birds Water Rail Birds Waxwing Birds Wheatear Birds Whimbrel Birds Whinchat Birds Whitethroat Birds Wigeon Birds Willow Warbler Birds Wood Pigeon Birds Wood Warbler Birds Woodcock Birds Wren Birds Yellow Wagtail Birds Yellowhammer Birds