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Tecoma stans
Yellow flowers like trumpets. from a bush about 2 m high. Very common.
Near an oak forest
Welcome Luis... In fact your description already helped me to find ID. I guess this plant feed Hummingbirds in your area. Similar flowering plants feed Indian similar little Sunbirds. But Sunbirds lands on Flowers while feeding. One day I will post those type pictures once grabbed.
When you find the ID, let me know because I have some of these and have never known what they are!