Editing Tufted duck (section)

== Description ==
The adult male is all black except for white flanks and a blue-grey bill with golden yellow eyes, along with a thin crest on the back of the head. It has a prominent tuft on its head, which gives the species its name. The adult female is brown with lighter flanks, and is more easily confused with other diving ducks. In particular, some have white around the base of the bill, resembling the [[greater scaup|scaup]] species, although the white is never as extensive as that of those [[duck]]s. The female's call is a harsh, growling "karr", usually given in flight. Males are mostly silent but will whistle during courtship, based on a simple "wit-oo".

The only ducks that are similar are the [[greater scaup]] and [[lesser scaup]], but these species lack the tuft and emit a different call.

The tufted duck is one of the species to which the ''Agreement on the Conservation of African-Eurasian Migratory Waterbirds'' ([[AEWA]]) applies.<ref>{{ cite web | title=Official language versions of the Agreement Text and its Annexes as amended by the 8th Session of the Meeting of the Parties (MOP8) | url=https://www.unep-aewa.org/en/documents/agreement-text  | publisher=Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) | access-date=1 July 2024 }}</ref>

Refer to the following table for measurements of the tufted duck:<ref>{{Cite web|last1=Azzi|first1=MayaV|last2=Garrison|first2=RyanJ|title=Aythya fuligula (tufted duck)|url=https://animaldiversity.org/accounts/Aythya_fuligula/|access-date=2020-09-25|website=Animal Diversity Web|language=en}}</ref>
{| class="wikitable"
|+Tufted duck measurements
!Measurement
!Male
!Female
|-
|Range of mass
|753–1026.2 g
|629–906.8 g
|-
|Average of mass
|889.6 g
|768.3 g
|-
|Range of length
|40.6-45.7&nbsp;cm
|40.6-45.7&nbsp;cm
|-
|Average of length
|43.2&nbsp;cm
|43.2&nbsp;cm
|-
|Range of wingspan
|20.2-21.2&nbsp;cm
|19.4-20.7&nbsp;cm
|}