Over the last few weeks (pausing for snow) there’s been a notable increase in bird song. This is because birds are establishing and asserting territories and looking for mates, or pair bonding in established relationships. Any time I’ve been outside in the daylight, the increased sun has been apparent. It’s a reminder that, while it is still cold out there, the wheel of the year turns towards spring.
Much of winter is not spent sleeping and waiting. What the birds are doing now is part of the preparation for the nesting to come. Spring does not happen magically out of nowhere.
One of the surprise consequences of being alert to bird song, was stepping outside a few days ago and hearing a call I was pretty sure I’d never heard before. The light conditions were poor, and although I could see the three birds making the sounds, I could pick out no identifying features. Tom went online and described what we’d head ‘as if angry insects were making a dial tone’.
They were corncrakes. We’ve since listened to recordings online, and confirmed it. They aren’t supposed to be here this early in the year, but the friend who identified them has had multiple encounters with what are likely the same birds, just a few miles further away.
My first thought is that climate change is shifting patterns of weather and behaviour. A few years ago I had a very clear sighting of a flock of waxwings, only to be told on Twitter that it was far too late in the year and I couldn’t possibly have seen them… My second thought is that I doubt the research into the precise habits of birds is as detailed as it could be. Any pattern of behaviour will produce a set of averages, but how much we know about the less-average behaviour, I’m not sure.
There are also biases in how we collect data. For example, most of the material I’ve read on otters describes a large territory and a roaming pattern of feeding within it. This is actually the pattern for dog otters and it turns out we don’t know so much about what females, and females with cubs actually do.
This is one of the reasons it is so important to engage personally and directly with what’s around you. The notions about what a species does are general, not specific, and what happens where you live may buck the trend.
More about corncrakes – including a video of the insect telephone noise here – https://www.rspb.org.uk/birds-and-wildlife/wildlife-guides/bird-a-z/corncrake/