The Plastic Eggs come in 3 sizes: Finch/Canary - eggs come 10 per pack. 5/8 inch in length. Medium - Measures approximately 2/3 inch in length. For Parakeet/Budgie and other similar size birds. Price is per egg. Large - Measures approximately 1 - 1 1/4 inch in length. For Cockatiel/Lovebirds and other similar size birds. Price is per egg.