384. Oram, G., G. Grove, L. Goodrich. 2023. Cyclical Pattern Detected in Northern Harrier Migration Counts at Some Pennsylvania Hawk Watches. Pennsylvania Birds 37(1) 9-12. | Hawk Mountain Sanctuary: Learn Visit Join

384. Oram, G., G. Grove, L. Goodrich. 2023. Cyclical Pattern Detected in Northern Harrier Migration Counts at Some Pennsylvania Hawk Watches. Pennsylvania Birds 37(1) 9-12.

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