It is, on average, around twelve to fourteen days from the time the last egg is laid. Robins tend to lay only one egg per day because the female birds have only one working ovary.
Most mammals generally have two which look like small grapes called the ova, or yolks. On average the largest of the yolks begins to ovulate and starts to travel down a tube to the outside of the robin's body and into the oviduct.
If a female robin has successfully mated with a male robin then the yolk will turn into an egg and hatch. However, if the robin has not been with the female robin, the yolk still travels down the oviduct and will be laid normally, but it won't go and create a fully-fledged robin.
As the yolk speeds down like a bullet train, the tube's walls slowly secrete or drip out watery proteins which are called albumen in order to protect and surround the yolk.
Near the end of the egg's journey, the oviduct secretes a number of calcium compounds. The calcium compounds will in turn develop to become the eggshell, but the egg will remain a little bit soft until it is laid.
Robins on the whole only usually lay four eggs and then stop. Like the majority of birds, they lay one egg daily until their so called 'clutch' is complete. If you decide to remove one egg each day, some species of birds will keep laying for a long time. Their diets consists of mainly small bugs, insects and earthworms which they dig for using their very strong beaks. They often fly back to the nest to feed their young and take daily trips to do this function.
Most mammals generally have two which look like small grapes called the ova, or yolks. On average the largest of the yolks begins to ovulate and starts to travel down a tube to the outside of the robin's body and into the oviduct.
If a female robin has successfully mated with a male robin then the yolk will turn into an egg and hatch. However, if the robin has not been with the female robin, the yolk still travels down the oviduct and will be laid normally, but it won't go and create a fully-fledged robin.
As the yolk speeds down like a bullet train, the tube's walls slowly secrete or drip out watery proteins which are called albumen in order to protect and surround the yolk.
Near the end of the egg's journey, the oviduct secretes a number of calcium compounds. The calcium compounds will in turn develop to become the eggshell, but the egg will remain a little bit soft until it is laid.
Robins on the whole only usually lay four eggs and then stop. Like the majority of birds, they lay one egg daily until their so called 'clutch' is complete. If you decide to remove one egg each day, some species of birds will keep laying for a long time. Their diets consists of mainly small bugs, insects and earthworms which they dig for using their very strong beaks. They often fly back to the nest to feed their young and take daily trips to do this function.
