This morning I returned to the garden near my house for the Hume's Warbler, this time I left the kids at home. I relocated the warbler immediately and tried to obtain a presentable image and a sound recording. Wow, this bird is a nightmare! So shy and so extatic, it took me about an hour before I got some crap record shots like this one. But at least you can see some ID features here - very limited pale base to lower mandible, dark legs, and no dark bases to secondaries. This is a 1cy (check the shape and wear of TF), that's why it's relatively bright.
Of course the most important feature is the call - very distinctive: