Swan's snippets: Artificial nests for house-martins - The Field
House martins: July bird of the month - The English Garden
Western house martin - Wikipedia
14 facts about house martins – The Devon House Martin Project
Five facts you need to know about house martins - Scottish Nature Notes - Our work - The RSPB Community
House martin building nest under eaves of house in Northern Greece Stock Photo - Alamy
House Martins – David at the HALL of EINAR
Prevent Housemartins Nesting in Your Eaves | No More Birds
House martin: song, nest & migration - Plantura
House Martin on Arran - Arran Birding
House Martins/swallows - No Birds Here!
Northern/Siberian House-Martin - eBird
Delichon - Wikipedia
The house martin - Saga
Common House Martin Facts, Habitat, Diet, Predators, Pictures
Almost Wordless Wednesday: House Martins | The Anxious Gardener
House Martin breeding
Help protect House Martin nests - BirdGuides
File:House Martin nests (35255196250).jpg - Wikimedia Commons
Nest cups – House Martin Conservation UK & Ireland
House martins in dire decline because 'homeowners are destroying their nests' | Daily Mail Online
Species of the day: House Martin | Sussex Wildlife Trust
The House Martin Survey | BTO - British Trust for Ornithology
