According to Zen's Egg Encyclopaedia, the eggs are prone to spawning in only a few locations based on their descriptions.
===
[Red Egg]
Points: 1
Abilities: Runs very fast.
Other Information: Can be found in open areas.
[Blue Egg]
Points: 2
Abilities: Poisonous shell.
Other Information: Hides in long grass.
[Green Egg]
Points: 3
Abilities: Camouflage.
Other Information: Loves food.
[Yellow Egg]
Points: 4
Abilities: Extra Fragile.
Other Information: Loves to swim.
[White Egg]
Points: 10
Abilities: Flight.
Other Information: Perches on high places.
[Black Egg]
Points: 50
Abilities: Countdown.
Other Information: Hates crowding.
===
While some were obvious, others were questionable.
"For now, secure the garden, kitchen, swimming pool and rooftops. It is easy to farm
