The Orange-crowned Warbler winters in the southern US and subtropical Mexico. It is a relatively common breeding species in much of British Columbia. Here on the south coast it can be found in scrubby deciduous woods.
It forages for insects and other invertebrates among leaves and flowers. This one is poking around in Pieris blossoms.
The call is a descending trill, which can now be heard within the birch and salal "hedge-rows" that surround Richmond's blueberry fields.