I think Turdus merula is quite often under-appreciated. They sing so marvellously it’s just always a joy and I’m happy that we’ve got a resident pair around. Overall, the species is doing fine apart from Britain, where agricultural intensification is playing a part in its decline.
This Corvus cornix was looking for food on the banks of the Danube in Austria where I saw it a couple of years ago. The species used to be seen as part of Corvus corone (Carrion crow) but was given full species status in 2002. Danger to the birds comes from gamekeepers and similar numpties who hunt them.
Aegithalos caudatus is one of my favourite species. They’re quite social birds and also, as you can see in this photo which I took in Slovakia, pretty acrobatic.
The species is not threatened at the moment. Having said that, habitat fragmentation and replacing old forests with monocultures have a negative impact (https://www.iucnredlist.org/species/103871923/874710819).
These Calonectris borealis were sailing alongside the freighter I was travelling on, somewhere off the Canary Islands. Threats to the species are mammals which have been introduced to their breeding islands, artificial lights which cause fledglings to steer off course and fishing because the birds end up as bycatch on long-lines.
Thank you to the people on birdforum.net who helped with the ID.