Mesmerizing!
This might be the only pigeon entry that gives me majestic feelings: Something most people, including me, might not interpret when thinking of pigeons, which can be both unique and risky at the same time.
However, you managed to pull this off wonderfully while preserving the pigeons' playful energy! The example is an unpredictable time signature shift (both start and end), the instruments that resemble the sound of pigeons: the low-pitched sound being the leader and the high-pitched sound being his pigeon flock (or at least, that's what I interpreted). The melody arrangement is also very catchy and a pleasant delight to hear! :)
Regarding the reason that some people might not be confident if this music belongs in the "1000 pigeons" theme, I speculate that it could be because the music might not fully utilize the chaotic factors that capture the essence of pigeons. I can see a good attempt to apply frantic mayhem energy to the music as mentioned above. However, your clean, peaceful, and majestic aspects (they are all good things!) which reflect the nature of peaceful birds in general rather than pigeons specifically, might outweigh the pigeon elements you tried to convey through the music ;(
That being said, this music has a unique charm and its overall execution is beyond fantastic.
Please keep up the amazing work! :D