Word formation #2

Birds

Many birds, [PARTICULARITY]  those that mate for life...

are very  [SOCIAL]  and keep together in a family group...
...which might be anything from 4 or 6 adult birds and their [YOUNGISH]  to a very large flock.
As chicks grow they change the fluffy down that covers them as babies for real feathers. At this [STAGY]  they are called fledglings.
Other family members may help care for fledgling chicks, feeding them and [PROTECTOR] them from attack while parents are feeding.
When the fledglings have their new feathers, they come out of the nest to learn to fly. In some types of birds, like pigeons, the parents watch over this and as the young ones get [STRONGLY] , will give them flying lessons...
...teaching them how to [GLIDER] , how to fly in spirals and...
...how to [LANDING]  like an expert.