Begin with drawing three ovals for the whole body.
Make the beak around the face.
Now make those shapes for legs and feet.
Join them all and create the base for the body.
Now make the legs.
Make the feet and enhance the face with eyes.
Now, make the wings and enhance them.
Now elaborate the complete figure and enhance the drawing with required finishing touch.
How to Draw a Cetti's warbler [Speed Painting]