| American Journal of Primatology 21 2 : 87—100 | Earth Science Picture of the Day |
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| "Mixed flocks and polyspecific associations: Costs and benefits of mixed groups to birds and monkeys" | flock n noun: Refers to person, place, thing, quality, etc |
| flock n noun: Refers to person, place, thing, quality, etc | flock n as adj noun as adjective: Describes another noun--for example, " boat race," " dogfood |
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| "Foraging Behavior Patterns Suggest a Possible Cost Associated with Participation in Mixed-Species Bird Flocks" | flock n noun: Refers to person, place, thing, quality, etc |
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