This Egg Candler enables you to check for the very first signs of fertility in an egg. At app 3days of full incubation you will be able to identify without any doubt if the eggs are fertile. You will see a network of veins in the egg indicating fertility. The egg candler has a 5" flexible end so you even in deep budgerigar nest boxes you can get the Egg Candler right onto the egg without any problems. Perfectly suited to checking the eggs of any cage birds, from Zebra Finches, Canaries, British Finches, Budgerigars & Lovebirds. Complete with batteries this item is ready to go. Ideal Christmas gift for any birdkeeper. Priced at £7.00 each. This includes delivery to your door by recorded post anywhere in the UK. Payment by PayPal welcomed or Cheques/Postal Orders also accepted