After second look, we recognize a bird sitting on the fence is a House Sparrow. The bird is well known as invasive species in our areas.
Fig 01 - A House Sparrow, a visitor
Invasive species means that House Sparrows may compete and even kill native species in our areas.
Several species could be killed by House Sparrows are:
- Eastern Bluebirds (Sialia sialis)
- Tree Swallow (Tachycineta bicolor)
- Carolina Chickadee (Poecile carolinensis)
- Northern Flicker (Colaptes auratus)
- Downy Woodpecker (Dryobates pubescens)
Fig 02 - A corner of city
In our urban area, we may see aggressiveness of House Sparrow to kill birds in their nest, then take over the nest.
Fig 03 - A house Sparrow
Do you see a House Sparrow in your areas?
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