30 year old
30s
adult
analysis
autumn
biologist
camera
concentrated
documentation
documenting
environment
environmental
equipment
fall
horizontal
male
man
nature
observation
observing
outdoor
outdoors
outside
photo camera
photographer
photographing
portrait
professional
professional equipment
research
researcher
science
scientific
scientist
season
serious
study
studying
thirty
two people
work
young man
young researcher
young scientist