Shifts in the Timing of Bird Migrations Due to _______

Multiple Choice

Shifts in the timing of bird migrations due to _______ can affect the probability of the birds feeding on fish and insect populations. If birds migrate when fish are not spawning or insects are not at the peaks of their populations, the birds may not find food along their migratory paths and they will not be able to complete their journey due to weakness or death. This may affect their ability to successfully reproduce and thus their populations will decline.

A) introduction of invasive species
B) poaching
C) global climate change
D) habitat loss
E) introduction of disease