Squirrels are not as vegan as you think — new research sheds light on ‘opportunistic omnivores’ capable of hunting and stealth

Sub :Env

Sec: Species in news

Context:

While squirrels are often associated with adorable antics like nibbling on nuts and shyly peeping from tree trunks, new research has revealed a surprising aspect of their behavior—California ground squirrels can also be stealthy predators, hunting and eating voles when needed.

Key Findings from the Study:

Research Title & Publication: “Vole hunting: novel predatory and carnivorous behavior by California ground squirrels” was published in the Springer Nature Journal.
Research outcome: Out of 74 vole interactions, 42% involved active hunting by squirrels.

Adaptive Advantage of Omnivory:

Survival Strategy: Squirrels’ ability to switch between herbivorous and carnivorous diets allows them to adapt to changing food availability.
Response to Human Impact: This flexibility might help squirrels endure in environments increasingly altered by human activities.

About California ground squirrels (Otospermophilus beecheyi):

Also known as the Beechey ground squirrel.
They are a common and easily observed ground squirrel of the western United States and the Baja California Peninsula.
IUCN status: Least Concern (LC)
They use their cheek pouches to store more food than can be consumed in one sitting to store it for a later date.
They are considered to be mostly herbivorous, with seeds, grains, nuts, fruits, and sometimes roots constituting most of their diet.

Indian Squirrels:

Indian squirrels, primarily represented by the Indian palm squirrel (Funambulus palmarum), are common and fascinating creatures found throughout the Indian subcontinent. Known for their agility and distinct striped appearance, these animals are a vital part of India’s biodiversity.

Key Characteristics:

Scientific Name: Funambulus palmarum
Physical Appearance:
- Medium-sized rodents with soft fur.
- Distinctive three white stripes running down their back (associated with a Hindu legend).
Habitat:
- Found in a variety of ecosystems, including urban areas, forests, and gardens.
- Prefers trees but adapts well to human surroundings.
Diet:
- Primarily herbivorous: feeds on fruits, nuts, seeds, and flowers.
- Opportunistic feeders, sometimes consuming insects.

Behavior and Adaptations:

Activity: Diurnal (active during the day).
Nesting:
- Builds nests in tree holes or dense foliage.
- Uses leaves, twigs, and soft materials for insulation.
Communication:
- Emits high-pitched chirping sounds to signal danger or interact with others.

Conservation Status:

IUCN Status: Least Concern
Threats:
- Habitat loss due to urbanization and deforestation.
- Predation by domestic cats, birds of prey, and snakes.

Source: DTE