Column Ilja: Sensitive ear
Leave the trees alone! All this chainsaw noise!
Fast learners are slow to unlearn
Unlearning behaviour is a complex process, as a study of great tits shows.
Birds
Goldcrest is as fast as the wind
A tiny bird with a transmitter flies 320 kilometres in less than…
Where are the chicks?
Tagged lapwings provide surprising insights.
A Little Wiser: Why are bird droppings white?
Resource dropped the question to Ingrid Tulp, researcher at Wageningen Marine Research.
A little wiser: Why do some birds migrate south in winter?
Some birds migrate south, some not. What's the decisive factor in this?