One clip names both of them

65 views between them.

Mute Swan outweighs Great Cormorant 4.2× — 10.7 kg against 2.5 kg. Both figures are averages across males and females.

Tale of the tape

Body mass

2.53 kg

🐦 Great Cormorant · AVONET

11 kg

🐦 Mute Swan · AVONET

Body length

1.01 m

🐦 Great Cormorant · SeaLifeBase

no figure yet

🐦 Mute Swan

Maximum lifespan

32 yr

🐦 Great Cormorant · AnAge

40 yr

🐦 Mute Swan · AnAge

Bars are sized against the larger of the two figures.

Animals caught on camera

Real footage of the animals on this site — hunting, fighting, and getting on with it.

Shared ancestry

The closest group they share is Aves (class), home to 18,988 species.

They last shared an ancestor about 102 million years ago.

Estimates range from 96 to 115 million years; the figure above is the middle estimate.

About this estimate

Dates from Jetz, Thomas, Joy, Hartmann & Mooers 2012, Nature 491:444 (CC0).