How significant is animal matter consumption to the roe deer's total caloric intake?
Answer
Less than one percent in most environments
Instances of eating bird eggs or nestlings are rare exceptions, representing a tiny fraction of the animal's total caloric intake, which does not alter its fundamental classification.

Related Questions
What is the primary classification of the European roe deer based on its diet?What food items form the overwhelming foundation of the roe deer's sustenance?Which physiological feature confirms the roe deer's classification as a ruminant herbivore?Which term best describes the roe deer's feeding strategy when selecting vegetation?Besides bird eggs and nestlings, what other non-plant source of nutrition is occasionally consumed by roe deer?How significant is animal matter consumption to the roe deer's total caloric intake?What is the likely driver behind the roe deer's opportunistic consumption of animal matter?How does the roe deer's selective browsing style influence managed woodlands?During which season is the roe deer generally furthest from needing any form of animal protein?What situation would most likely cause ecologists to change the roe deer's classification?