Can you explain the differences between the swallow and martin bird species"?

Swallows and martins are both types of birds, but they have some key differences. Swallows are known for their long, pointed wings and forked tails, while martins have shorter wings and square tails. Swallows are typically more acrobatic flyers, darting and diving through the air to catch insects, while martins tend to have a more direct flight path. Additionally, swallows often build their nests in sheltered areas like barns or under bridges, while martins prefer to nest in cavities or birdhouses.