"aggression."

#13497664

26 Mar 2026

Mute swans fight over a mate at the Fernald Nature Preserve in Ross, Ohio, on March 26, 2026. Mute swans are highly territorial birds that engage in fierce competition for mates and breeding sites, particularly during spring. Males, known as cobs, may battle rivals, sometimes attempting to submerge them, to secure a female or defend a nesting territory. These often lifelong pairs aggressively drive away intruders.

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#13497665

26 Mar 2026

Mute swans fight over a mate at the Fernald Nature Preserve in Ross, Ohio, on March 26, 2026. Mute swans are highly territorial birds that engage in fierce competition for mates and breeding sites, particularly during spring. Males, known as cobs, may battle rivals, sometimes attempting to submerge them, to secure a female or defend a nesting territory. These often lifelong pairs aggressively drive away intruders.

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#13497666

26 Mar 2026

Mute swans fight over a mate at the Fernald Nature Preserve in Ross, Ohio, on March 26, 2026. Mute swans are highly territorial birds that engage in fierce competition for mates and breeding sites, particularly during spring. Males, known as cobs, may battle rivals, sometimes attempting to submerge them, to secure a female or defend a nesting territory. These often lifelong pairs aggressively drive away intruders.

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#13497667

26 Mar 2026

Mute swans fight over a mate at the Fernald Nature Preserve in Ross, Ohio, on March 26, 2026. Mute swans are highly territorial birds that engage in fierce competition for mates and breeding sites, particularly during spring. Males, known as cobs, may battle rivals, sometimes attempting to submerge them, to secure a female or defend a nesting territory. These often lifelong pairs aggressively drive away intruders.

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#13497668

26 Mar 2026

Mute swans fight over a mate at the Fernald Nature Preserve in Ross, Ohio, on March 26, 2026. Mute swans are highly territorial birds that engage in fierce competition for mates and breeding sites, particularly during spring. Males, known as cobs, may battle rivals, sometimes attempting to submerge them, to secure a female or defend a nesting territory. These often lifelong pairs aggressively drive away intruders.

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#13497669

26 Mar 2026

Mute swans fight over a mate at the Fernald Nature Preserve in Ross, Ohio, on March 26, 2026. Mute swans are highly territorial birds that engage in fierce competition for mates and breeding sites, particularly during spring. Males, known as cobs, may battle rivals, sometimes attempting to submerge them, to secure a female or defend a nesting territory. These often lifelong pairs aggressively drive away intruders.

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#13497670

26 Mar 2026

Mute swans fight over a mate at the Fernald Nature Preserve in Ross, Ohio, on March 26, 2026. Mute swans are highly territorial birds that engage in fierce competition for mates and breeding sites, particularly during spring. Males, known as cobs, may battle rivals, sometimes attempting to submerge them, to secure a female or defend a nesting territory. These often lifelong pairs aggressively drive away intruders.

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#13497671

26 Mar 2026

Mute swans fight over a mate at the Fernald Nature Preserve in Ross, Ohio, on March 26, 2026. Mute swans are highly territorial birds that engage in fierce competition for mates and breeding sites, particularly during spring. Males, known as cobs, may battle rivals, sometimes attempting to submerge them, to secure a female or defend a nesting territory. These often lifelong pairs aggressively drive away intruders.

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#13497672

26 Mar 2026

Mute swans fight over a mate at the Fernald Nature Preserve in Ross, Ohio, on March 26, 2026. Mute swans are highly territorial birds that engage in fierce competition for mates and breeding sites, particularly during spring. Males, known as cobs, may battle rivals, sometimes attempting to submerge them, to secure a female or defend a nesting territory. These often lifelong pairs aggressively drive away intruders.

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#13497673

26 Mar 2026

Mute swans fight over a mate at the Fernald Nature Preserve in Ross, Ohio, on March 26, 2026. Mute swans are highly territorial birds that engage in fierce competition for mates and breeding sites, particularly during spring. Males, known as cobs, may battle rivals, sometimes attempting to submerge them, to secure a female or defend a nesting territory. These often lifelong pairs aggressively drive away intruders.

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#13497674

26 Mar 2026

Mute swans fight over a mate at the Fernald Nature Preserve in Ross, Ohio, on March 26, 2026. Mute swans are highly territorial birds that engage in fierce competition for mates and breeding sites, particularly during spring. Males, known as cobs, may battle rivals, sometimes attempting to submerge them, to secure a female or defend a nesting territory. These often lifelong pairs aggressively drive away intruders.

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#13497675

26 Mar 2026

Mute swans fight over a mate at the Fernald Nature Preserve in Ross, Ohio, on March 26, 2026. Mute swans are highly territorial birds that engage in fierce competition for mates and breeding sites, particularly during spring. Males, known as cobs, may battle rivals, sometimes attempting to submerge them, to secure a female or defend a nesting territory. These often lifelong pairs aggressively drive away intruders.

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#13497676

26 Mar 2026

Mute swans fight over a mate at the Fernald Nature Preserve in Ross, Ohio, on March 26, 2026. Mute swans are highly territorial birds that engage in fierce competition for mates and breeding sites, particularly during spring. Males, known as cobs, may battle rivals, sometimes attempting to submerge them, to secure a female or defend a nesting territory. These often lifelong pairs aggressively drive away intruders.

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#13497677

26 Mar 2026

Mute swans fight over a mate at the Fernald Nature Preserve in Ross, Ohio, on March 26, 2026. Mute swans are highly territorial birds that engage in fierce competition for mates and breeding sites, particularly during spring. Males, known as cobs, may battle rivals, sometimes attempting to submerge them, to secure a female or defend a nesting territory. These often lifelong pairs aggressively drive away intruders.

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#13497678

26 Mar 2026

Mute swans fight over a mate at the Fernald Nature Preserve in Ross, Ohio, on March 26, 2026. Mute swans are highly territorial birds that engage in fierce competition for mates and breeding sites, particularly during spring. Males, known as cobs, may battle rivals, sometimes attempting to submerge them, to secure a female or defend a nesting territory. These often lifelong pairs aggressively drive away intruders.

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#13497679

26 Mar 2026

Mute swans fight over a mate at the Fernald Nature Preserve in Ross, Ohio, on March 26, 2026. Mute swans are highly territorial birds that engage in fierce competition for mates and breeding sites, particularly during spring. Males, known as cobs, may battle rivals, sometimes attempting to submerge them, to secure a female or defend a nesting territory. These often lifelong pairs aggressively drive away intruders.

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