White-breasted nuthatches and Downy woodpeckers both eat insects that hide in the furrows of bark in hardwood trees. The Downy woodpecker searches for insects by hunting from the bottom of the tree trunk to the top, whereas the white-breasted nuthatch searches from the top of the trunk down. These hunting behaviors best illustrate which of the following ecological concepts?
A) competitive exclusion
B) resource partitioning
C) character displacement
D) keystone species
E) bottom-up and top-down hypotheses
Black flies are blood-sucking insects who vector disease, like River Blindness, while feeding on hum
English White Terrier
Urinary tract infection. A UTI is characterized by fever, lumbar or abdominal pain, and pain or burn
Buffy Helmetcrest and White-bearded Helmetcrest
White giraffe in Tanzania