Eastern red bats are furry, red-colored bats that live in trees, not caves. They wrap themselves in a tail “blanket” and hang by one foot to sleep, blending in like leaves. These small, solitary bats hunt insects after sunset and raise pups. In fall, they migrate south in groups called cauldrons and hibernate in leaf piles. Despite spooky myths, they’re helpful, harmless critters perfect to celebrate this Halloween.

Green herons are shy birds found near ponds and rivers. Their green-gray backs and chestnut necks help them blend into tall grasses. They hunt by standing still or using bait to lure fish. These birds nest high in trees and both parents help raise the young. Green herons migrate south for winter and return to Illinois each spring. Look closely on your next nature walk and you might spot one.

What looks like a giant mosquito may be a harmless crane fly. They do not bite or sting and most adults do not eat. Adults live only a few days to mate and lay eggs. They spend most of their lives as larvae feeding on plant matter in soil or water. Larvae can damage lawns but crane flies are an important food source and sensitive to pollution. If one flies indoors, gently move it outside rather than swatting.

Flies may seem pesky, but they have incredible abilities. They flap wings 200 times per second, land upside down, see in all directions, and process images faster than humans. They eat by spitting digestive juices on solids to liquefy them. Though often seen as dirty, flies groom themselves regularly. They play key roles by decomposing waste and pollinating plants. Despite their small size, flies help keep ecosystems healthy.

Eastern and ornate box turtles are land-loving turtles found in forests and prairies. They can close their shells like a box to protect from predators. Males have red eyes and concave plastrons; females have brown eyes and flat ones. Ornate box turtles mostly eat animals, while eastern ones eat plants and fungi too. Both brumate in winter. Ornate box turtles are threatened in Illinois, and one can be seen at Plum Creek Nature Center.

The yellow garden spider is a large black, yellow and white orb-weaver with a zigzag silk pattern in its web. Common in gardens and fields, females are much larger and more colorful than males. They aren’t aggressive and rarely bite. These spiders spin neat webs, catch flying insects and often stay in one spot for the season. Females lay up to 1,000 eggs in silk sacs. Look for them in sunny spots from August to September in Illinois.

Tortoise beetles are tiny, colorful insects with turtle-like shells that help them hide from predators. Found in Illinois, they come in many colors like gold, green, or speckled. Some can even change color. They eat plants, live only about three months, and moms protect their young. As larvae, they build poop umbrellas (called fecal parasols) to hide and stink off predators. Keep an eye out for these clever beetles this summer.

Rose-breasted grosbeaks are striking black and white birds with rose-colored chests, seen in Illinois during breeding season. Only adult males have the rosy chest. Females and young are streaky brown. They eat seeds, insects, and fruit, nesting in trees with both sexes caring for the young. Their song is sweet like a robin’s, and their “eek” call sounds like a gym shoe squeak. Other grosbeaks exist in North America, but few are seen regularly in Illinois.