All of the above
To make a nest for their young
To find females to mate with
To find food underground
Do not be afraid of them
Be patient and observe them
Look for them places with many flowers
They dig at random until they find one
They smell them
They hear them
They memorized a map
Most of the native bees in North America have already been studied.
4000
1000
10
400
Even native bees that can sting rarely sting people unless you scare or hurt them.
To hide from birds that would eat them
To make a burrow to keep themselves cool in the summer
On flowers
In underground cells
In the bark of trees
In honeycombs
A waxy coating along the inside
Nectar and pollen
An egg