GREY WARBLER

We have a pair of these little Native to N.Z. Grey Warblers living in our garden. They have a melodic rambling song which can be heard all around the garden but they are very hard to spot and photograph. They are tiny only 100mm in length are never still and flit about catching small insects.
I have been trying to photograph one for a long time and managed to capture this one this morning in a silver birch tree in our drive .