It's Japanese Flowering Quince(Chaenomeles speciosa). The most common red cultivar is 'Texas Scarlet', but I can't say that's the cultivar you have or not. I've seen many unnamed ones with similar flowers. They are quite adaptable to different soil types, seem to be relatively drought tolerant. The only thing mine demmand is full sun for flowering. Yours looks like it's doing fine.

It looks like a flowering quince. They have such beautiful flowers but are hard to keep nice form. Yours could probably use some more pruning (in late spring or early summer after flowering). It is recommended to prune to 6 -8 long, tall branches removing any crossing or badly spaced stems. To increase flowers for next year - spur-prune - or cut back sideshoots to two or three leaves - to produce more abundant flowers. It is probably best to renovate your bush over two or three years. Good luck, nancy

Hi, yes we found some pictures and they are yellow flowers - pics on the web of forsythia look exactly like it. Thanks for your help!

Here's what I surmise from the picture - the foliage and thorns look like black locust, Robinia hispida. But, the only red berries I see in the background look more like a cluster of nandina berries. What thinkest others, here? hortster