There are 18 species of weavers that usually only lay pure blue eggs. Blue or blue-green eggs are very widespread in birds generally, resulting from the predominant deposition of the pigment biliverdin (Walters 2006a). Many other weavers lay eggs with a variety of colours, so some individual females may lay pure blue eggs, while other individuals of the same species lay eggs of various colours and markings.

The list below includes two quelea, three fodies, two bishops, and 11 other weavers.

See also white eggs.

Weavers with blue or blue-green eggs:

Nelicourvi Weaver Ploceus nelicourvi - rarely with spotting
Sakalava Weaver Ploceus sakalava

Sao Tome Weaver Ploceus sanctithomae
Red-headed Weaver Anaplectes rubriceps

Cape Weaver Ploceus capensis
Bocage's Weaver Ploceus temporalis
Speke's Weaver Ploceus spekei - rarely with spotting
Giant Weaver Ploceus grandis
Principe Golden Weaver Ploceus princeps
Vieillot's Black Weaver Ploceus nigerrimus - rarely with spotting

Weavers with eggs that are plain blue or sometimes plain white: