One clip names both of them

1,794 views between them.

Great Cormorant outweighs Mallard 3.0× — 2.5 kg against 0.8 kg. Both figures are averages across males and females.

Tale of the tape

Body mass

0.84 kg

🦆 Mallard · AVONET

2.53 kg

🐦 Great Cormorant · AVONET

Body length

no figure yet

🦆 Mallard

1.01 m

🐦 Great Cormorant · SeaLifeBase

Maximum lifespan

29 yr

🦆 Mallard · AnAge

32 yr

🐦 Great Cormorant · 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).