Q.holly
Can you suggest a Holly that does not get too big, for a foundation planting. Also, can I get flowers if I do not mix male and female plants? Don’t want the mess birds make. Desire flowers but not berries. Thank you.
Look for true Dwarf varieties of Holly.
Even if you do not plant both a male and female Holly if your neighbors have Holly's they may still pollinate and produce berries.
They can be planted quite a distance apart.
Here are some links to help you.
https://www.gardeningknowhow.com/ornamental/shrubs/holly/growing-holly-bushes.htm
https://www.gardeningknowhow.com/ornamental/shrubs/holly/how-to-tell-the-difference-between-a-male-and-female-holly-bush.htm
https://www.gardeningknowhow.com/ornamental/shrubs/holly/common-types-of-holly.htm