Alcoa Anglesea: 2008 Season Video

You can also download the video from my website:

http://www.falcoperegrinus.nl/films/Alcoa_2008_end.wmv

Alcoa Anglesea: bonding behaviour

After the youngsters have left the nestsite we always see the adults, especially the male come back to the scrape. He is spending many hours over there standing in the entrance, perching. He will eventually go inside and start scraping bowles.

Many people have asked me, is there gonna be a new clutch. No way! Starting a clutch has everything to do with androgens, and the production of these is being influencend by the increasing amount of daylight hours in the spring. Now that summer is blooming, the daylight hours are not increasing anymore. The androgenlevels are dropping.





This behaviour of the male is all about bonding to the site. And to his partner. After the juvies have left the nestsite is his again. This is the site he picked for his female, it is his choice, his estate in a way and he is taking it back. He leaves his footprint. He is marking it again with bowles.





The female will enter as well and they will display in courtship behaviour: head-bow-low, eechupping. This is bonding behaviour, a conformation to eachother of the bond they have. Like a renewal of the vows in a way. It may even envolve copulations when the juvi's are still around.

So no second clutches but a very special bonding behaviour: we belong together. We have raised and fledged yet another healthy couple of juveniles. And we will do that together the next time at this nestsite.





Although copulations are only with the purpose of reproduction in the avian world, here it has a second function. The one of bonding, of confirming the pairbond. We see copulations as well during territorial disputes, With the same function: I belong to you, you belong to me. You'll make me strong I will fight for you.
And that makes these exeptional beings even more special.