all the words and a translation here. Go on - sing it! Í heard our first 2014 cuckoo on the air at 0545hrs yesterday morning. The unexpected benefits of having to wake through the night and run up to see if either of the last two ewes are ringing delivery bells is that I was first in family to catch the harbinger of Summer . . . and to see the gibbous waning moon suspended over an eerily yellow Cullentra ridge on the other side of the valley. Our cuckoo arrival records are even more desultory than those for the swallows:
|2007||19 Apr||2010||20 Apr|
|2009||02 May||2011||18 Apr|
When the chick hatches it uses a special hollow in its back to finish the job that its mother began and heave-ho: the other eggs and/or hatchlings go over the edge. That gets it the exclusive attention of one or both foster-parents. The behaviour of birds is generally much more genetically hard-wired than those of mammals. Parent birds are programmed to sick up a crop full of food into any gaping red maw. There is some evidence that they respond more strongly if the mouth is redder, bigger or gapinger; all of which dances to the cuckoo's tune. But other evidence ties the rate of feeding by the parents to the number of open mouths, in which case the solitary cuckoo-chick is at a disadvantage. The observation that the chicks contribute more to the murder than the hen-cuckoo was first made by Edward Jenner, whom we've met before inoculating people against smallpox.
The small fostering birds - more than 100 species have been documented as hosts - have not taken this all lying down. Some of them are clearly better at discriminating the unwelcome visitor. They have also generalised a behaviour called 'mobbing' which is used against avian predators like hawks and owls, but is also applied to cuckoos. When these hoodlums appear in the neighbourhood, lots of small potential prey consort to dive-bomb and harass it until it goes elsewhere. Cuckoos with barred breast-feathers which more closely resemble sparrowhawks Accipiter nisus are less likely to be mobbed - so here is another possible adaptation in cuckoos to secure more time to lay-and-go. It's also a good idea to nest far from the places that cuckoos habitually perch although that might be difficult if you have make your nest before t'buggers come back from over-wintering in Africa.
Those who are interested in the socio-geological landscape will know all about the Gowk Stanes which litter the Scots countryside. These are standing stones or glacial erratics which may serve as cuckoo-perches: gowk is Scots for Cuculus like gøg (.dk); gjøk (.no). These stones also serve a variety of other purposes - directional, boundary, social and religious.
Finally, if you want proof that the Germans didn't learn anything between 1936 and 1972 about the desirability of putting young people into uniforms and making them march about singing, checkout the Den Olympischenjugend singing the cuckoo song.