This is the time of year when I’m often on tenterhooks, waiting to see if any magpie chicks from the local breeding pair have survived the first month of their lives.
The magpie breeding season makes national headlines every year, for all the wrong reasons. People are aware that magpies are breeding, because a fraction of them swoop to protect their nests. It’s annoying at best, dangerous at worst, and many people grumble about it without truly understanding the stress these birds are under during this period. I don’t mean to excuse their behaviour – swooping has become dangerous for people living in an urban environment, and of course something needs to be done about it – but I think it helps to understand what is going on behind the scenes. The greater our knowledge, the better prepared we can be.
One characteristic that magpies share with humans is that we’re both altricial species; that means when we’re born – or, in the case of magpies, hatched – we are helpless, and require someone else to meet our needs in terms of feeding, cleaning, and teaching us to be independent.
Most people know that human childhoods last a decade and a half – give or take a few years – and that humans gradually move from a helpless state as newborns, to a more independent state as young adults. Magpies have a similar, if somewhat shorter, arc of maturation. Gisela Kaplan has stated that, “the physical and social development of magpie chicks requires an investment by adults of at least eight months.” (Australian Magpie: Biology and Behaviour of an Unusual Songbird).
In human societies, the people who invest the most time rearing a child from newborn to independence are social parents. (Social parents are the people who have been allocated the role of parent of a child. In most societies, and especially in ours, they are usually biological parents. But they can also be adopted parents, stepparents, and foster-parents). In magpie communities, parents also take the primary role in caring for their offspring. A mother sits on the nest throughout the incubation period, while her mate – usually the biological father of the offspring – brings her food. Magpies can also exist in family groups and, like kookaburras, have non-breeding helpers who will also bring food to the mother while she is brooding. During the incubation period, which Gisela Kaplan states is about 20 days, the male stands guard. This is the swooping period.
Much can go wrong during this period. The eggs, of course, are vulnerable. But the mother is also vulnerable. Unable to move for long from her nest, she is dependent on her mate and helpers. She and the eggs can become exposed to the danger of storms, hot weather, or predators. For the eggs to survive, she must survive the incubation. But not only that: As the magpie chicks are helpless when they’re born, for the chicks to survive, she must survive the entire period of their maturation. She needs nurturing just as much as the eggs, which is what her mate does.
After the eggs have hatched, the hatchlings spend approximately four weeks in the nest. Mother, father, and helpers feed the hatchlings throughout this period. Amazingly, the parent magpies show no preferential treatment when dealing with the hatchlings. They feed all of them equal amounts, playing no favourites. Kaplan suggests this as a reason that magpie siblings don’t eat each other in a nutrient-deprived environment, the way kookaburras do.
Even when magpie chicks have fledged, they’re not ready to hunt for themselves. In the early months after fledging, anyone can observe the baby magpie begging for food, and the magpie parents hurrying to meet its needs with a worm or a grub. When I first witnessed this act of feeding, it reminded me of the days when my children were newborns, crying for food every three hours or so, while I hurried to accommodate. As different as our species are, it’s incredible we have this in common.
So, next time you see a magpie parent feeding its magpie chick, stop and marvel for a moment at the feat of caring, persistence, and teamwork that has nurtured this young bird to a point where it’s almost independent. It is amazing, in the end, that so many magpies manage to hatch and breed their young, while living peacefully alongside us.
Oh, and by the way, this year, one hatchling from our local breeding pair did survive to become a fledgeling. Here she is very newly fledged, confidently sitting on the branch of a nearby tree. Gorgeous!
References: Gisela Kaplan, ‘Australian Magpie: Biology and Behaviour of an Unusual Songbird