Term
| How far do Indiana bats travel migrate? |
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Definition
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Term
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Definition
Females form maternity colonies in hollow trees or under loose bark of living or dead standing trees
-Less than 100 |
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Term
| How much sun do their roosts need? |
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Definition
| Suitable roost trees require a minimum of 7 hours of direct sunlight per day |
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Term
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Definition
| Males roost singly or in small groups in hollow trees or under loose bark of living or dead standing trees |
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Term
| What kind of trees do bats need? |
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Definition
Standing dead trees are selected over living trees
Important living tree species for maternity colonies include shagbark hickory and white oak (loose bark) |
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Term
| How big do the trees need to be? |
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Definition
| Trees over 20 inches diameter breast height are selected |
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Term
| How many trees do they use? |
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Definition
Maternity colonies typically use 10 – 20 different trees each year
1-3 primary |
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Term
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Definition
Indiana bats eat up to half their body weight in insects each night
About 0.25 ounces |
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Term
| What is bat hibernation like? |
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Definition
Indiana bats require cool, humid caves and mines with stable temperatures under 50oF but above freezing
Hibernate ~6 months |
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Term
| What are the two size categories of trees needed? |
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Definition
Living trees
Retain >3 trees/acre >20 inches dbh
Retain >6 trees/acre >11 inches dbh |
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Term
| How can you manage habitat for bats? |
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Definition
Retain all living shagbark hickory and white oak trees over 12 inches in diameter for maternity roosts within forest tracts where trees are harvested
Selection cutting
Shelterwood harvesting |
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Term
| When should tree harvest occur? |
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Definition
| Tree harvesting should occur between 1 October and 31 March |
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Term
| Where should you not harvest trees? |
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Definition
| Avoid harvesting trees within 100 feet of any known hibernaculum |
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