• birdi,
• birdds,
• burdien,
• bordres,
• burdins,
• bridies,
• budies,
• bdies,
• boidies,
• burries,
• berties,
• birdges,
• boddies,
• besdies,
• badies,
• boardies,
• birdes,
• birdneast,
• hircien,
• bidies

• Bodies,
• buddies,
• birdsell,
• bodes,
• bird shot,
• bites,
• birdsong,
• birdsall,
• bids,
• bird dog,
• birdcage,
• birdseed.

The plural of the "Birdies" can be the "Birdies".

The singular of the "Birdies" can be the "Bird".