Martins
Here's a list of all the UK Martins:
Sand Martin

Sand Martins, the tiniest members of the European hirundines family, are easily recognised by their dark brown upper parts and underwings. These birds contrast sharply with their pale underparts, which are uniquely marked by a distinct dark chest stripe.
Agile in flight, especially over water, you can also spot them perched on overhead wires or branches.
Differences Between Male And Female Sand Martins
Male and female Sand Martins are quite similar in appearance, but keen observers may note subtle differences. Males generally have a slightly more pronounced chest stripe and darker back, while females may have a more muted colouring.
Learn moreHouse Martin

House Martins are small, striking birds with glossy blue-black upper parts and stark white under parts.
These birds are known for their distinctive white rumps, forked tails, and the unique white feathers covering their legs and toes. When you spot one, you’ll often find it soaring in the sky, on the lookout for insects.
Differences Between Male And Female House Martins
Both male and female House Martins share a similar plumage, making it a bit of a challenge to tell them apart. The key is in the details: the males and females are almost identical in their glossy black and white attire.
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