Actually, they aren't. They may look that way because it may be cool in the spring, and they fluff their feathers to trap heat, making them look fat. They probably weigh less in the spring because of short winter food supplies.
Robins typically lay their eggs in the early spring, usually in March or April in North America. The timing can vary slightly based on location and local weather conditions. Robin eggs are usually light blue or greenish-blue in color.
The sparrow is larger than robin because it is fat and taller.
Both the robin and the bluebird are often associated with the arrival of spring, as they are migratory birds that return during this season. However, in folklore, the robin is commonly seen as a traditional harbinger of spring due to its bright red breast.
robins and sparrow have differents types of bases
Bears put on fat during the autumn in order to hibernate (sleep) and live off their fat over the winter months. They wake in the spring and are thin and hungry. Female bears give birth whilst in hibernation.
It is unlikely that Robins eat fat balls. In all the years I have had fat balls in the garden for the wild birds I have not seen a Robin pecking at them.
no only in the spring
Robins typically have babies in the spring, usually between April and July.
no you dont
Summer and spring.
usually winter, but they do seem to pop up in the winter-European Robins (Erithacus rubecula) American Robins, always come out during the start of spring.
none
none
A "one effect of robins breeding grounds" early is frozen baby robins....if that's what your weird grammar is asking.
In spring, robins mainly nest and eat search for food. They eat mostly insects, berries from vines and bushes and more. That is what birds do in the spring.
They have to love and care for each other then in spring they have a baby(s)
Robins nest in spring, and may raise two broods in southern states.