Editing Duck (section)

===Feeding===
[[File:Duck 1 filter teeth edit.jpg|thumb|[[Pecten (biology)|Pecten]] along the bill]]
[[File:Duckling preening (81313).webm|thumb|[[Mallard]] duckling preening]]
Ducks eat food sources such as [[Poaceae|grass]]es, aquatic plants, fish, insects, small amphibians, worms, and small [[mollusc]]s.

[[Dabbling duck]]s feed on the surface of water or on land, or as deep as they can reach by up-ending without completely submerging.<ref>{{cite web | last = Ogden | first = Evans | title = Dabbling Ducks | publisher = CWE | url = https://www.sfu.ca/biology/wildberg/species/dabbducks.html | access-date = 2006-11-02 }}</ref> Along the edge of the bill, there is a comb-like structure called a [[Pecten (biology)|pecten]]. This strains the water squirting from the side of the bill and traps any food. The pecten is also used to preen feathers and to hold slippery food items.

[[Diving duck]]s and [[sea duck]]s forage deep underwater. To be able to submerge more easily, the diving ducks are heavier than dabbling ducks, and therefore have more difficulty taking off to fly.

A few specialized species such as the [[merganser]]s are adapted to catch and swallow large fish.

The others have the characteristic wide flat bill adapted to [[dredging]]-type jobs such as pulling up waterweed, pulling worms and small molluscs out of mud, searching for insect larvae, and bulk jobs such as dredging out, holding, turning head first, and swallowing a squirming frog. To avoid injury when digging into sediment it has no [[cere]], but the nostrils come out through hard horn.

''[[The Guardian]]'' published an article advising that ducks should not be fed with bread because it [[Angel wing|damages the health of the ducks]] and pollutes waterways.<ref>{{cite web|author=Karl Mathiesen |url=https://www.theguardian.com/environment/2015/mar/16/dont-feed-the-ducks-bread-say-conservationists |title=Don't feed the ducks bread, say conservationists |newspaper=The Guardian |date=16 March 2015 |access-date=13 November 2016}}</ref>