Tuesday, 18 March 2014

Black Forest Birds - Long-tailed Tit


The Long-tailed Tit (Aegithalos caudatus) is a bit different to other true tits, a bit like the Bearded Tit or Bearded Reedling as it's now officially called.  These tiny birds can be seen from Portugal to Siberia in a variety of forms. I've often looked and listened for the bird in North Africa but as yet have never come across any. All the true tits are pretty small, squat passerines that like a variety of woodland and forest habitats. Most of the group including the Long-tailed are resident birds, meaning they stay in their place of birth and don't migrate. 


The Long-tailed Tit would probably be a candidate as Europe's smallest bird if it weren't for the long tail!
The top photo shows no tail which works quite well with this head-on 'tennis ball' appearance.


Here's a photo of a bird with nesting material. See how long the tail is in flight


One of the more interesting recent observations involving Long-tailed Tits was that they co-operate with other neighbours of the same species in feeding young in the nest when they have lost their eggs or brood to predators or bad weather. This co-operation is not so unusual in the bird world with around 9% of birds show activities of co-operative breeding. This flies in the face of Charles Darwin's theory of Natural Selection. Birds that are in some way genetically related of course respond more to this communal helping.
The research of this study with Long-tailed Tits was done between 1995 and 2011 in the Rivelin Valley near Sheffield, UK. You can read more on this here. On Peter Clark's blog there are some photos and more links and other interesting info. and photos on the project


Here are some more photos of this lovely bird








Sunday, 16 March 2014

Black Forest Birds - Eurasian Nuthatch

 A fairly common bird that can be found in European woodlands is the very smart looking Eurasian Nuthatch (Sitta europaea). It's a very photogenic and most agile species and often hangs or walks up trees at all kinds of angles and is obviously oblivious to any blood rushing to it's head!



The Eurasian Nuthatch can be seen in both deciduous and mixed woodlands and can be found foraging and nesting in neighbourhood gardens and town parks which contain large, mature trees. Although it spends most of the year in mixed woodlands, it often prefers to breed in places where there is an abundance of coniferous trees.



This nuthatch is a small bird, weighing only 17-28 grams and measuring just 14 cm long. However, it has a longer lifespan about 9 years on average which is more than similar sized small birds.





Pages