How to Check if an Egg is Alive: Step-by-Step Guide

Learn how to use the candling method and water test to check if an egg is alive and fresh in this quick guide.

Published Jun 7, 2025

Overview

In this informative video titled 'How to check if an egg is alive?', viewers learn effective techniques for determining the viability of an egg. The candling method and water test are highlighted as reliable methods to check for life inside the egg. This guide is essential for anyone interested in poultry farming, egg incubation, or simply wanting to understand more about egg freshness and viability. By utilizing these methods, you can not only maximize your egg usage but also enhance your knowledge of avian embryo development—all crucial information for both novice and experienced egg enthusiasts.

Video transcript

To check if an egg is alive, use the candling method. Hold the egg in front of a bright light source in a dark room. Rotate the egg slowly; you should see the embryo moving if it's alive. Alternatively, place the egg in a bowl of water; if it sinks and lays flat, it's fresh, whereas a floating egg may indicate it's no longer viable.

Questions and answers

What is the candling method for checking eggs?
The candling method involves holding an egg in front of a bright light source to observe the contents inside. If the embryo is alive, you will see movement within the egg.
How can you tell if an egg is fresh?
To determine if an egg is fresh, place it in a bowl of water. Fresh eggs will sink and lay flat on the bottom, while older eggs may float.
What should I do if an egg floats in water?
If an egg floats in water, it may be no longer viable. It's best to discard floating eggs to avoid potential food safety issues.
Can you candle eggs at any stage of development?
Yes, you can candle eggs at various stages of development. It’s typically done after a few days of incubation to check for embryo development.