Add Yahoo as a preferred source to see more of our stories on Google. Tree swallows at a Great Lakes bird observatory are shrinking, a troubling finding that University of Michigan researchers said is ...

Add Yahoo as a preferred source to see more of our stories on Google. Types of Birds that are Blue - Tree Swallow© Tom Reichner/Shutterstock.com The post Birds Are Shrinking as Insect Populations Drop ...

Since 1977, tree swallows at Long Point Bird Observatory have been losing mass and producing fewer offspring due to a collapse in the insect population, according to new research led by the University ...

Warming temperatures from climate change cause tree swallows to nest up to two weeks earlier than they did in the 1970s, but early spring cold snaps can hinder nestlings' growth and survival, ...

Since the 1970s, the number of insects at Canada's Long Point Bird Observatory has dropped by more than 60%, according to a new study led by the University of Michigan. Because of this, today's birds ...

Tree swallows at a Great Lakes bird observatory are shrinking, a troubling finding that University of Michigan researchers said is tied to crashing insect populations in the region and world. Tree ...

The dramatic decline in insect numbers is having a profound effect on some bird populations. As their food becomes scarcer, the birds are decreasing in size. However, climate change cannot be blamed ...