Aquatic Warbler Eggs to Chicks: Hatching, Development, and Fledging

Aquatic Warbler Eggs to Chicks: Hatching, Development, and Fledging

The aquatic warbler’s natural habitat is lowland bogs and marshland. This makes it one of the most threatened bird species worldwide. In this article we’ll look into the life of the chicks from the time the eggs are laid until the birds are old enough to leave the nest.

Keep reading to find out more.

How Many Eggs Does An Aquatic Warbler Lay?

The female aquatic warbler makes the nest with no help from the male. The nest, which is built in low vegetation, consists of grass, leaves, plant stems, soft plant material and spider’s webs. 

The components are woven together into a cup shaped nest which is then lined with softer plant material. She will lay anywhere between 3 to 5 eggs which will be incubated, hatched and the chicks reared then after around 45 days she will lay another 3 to 5 eggs and raise them as well.

So the same female will typically raise 2 broods each season with approximately 3 to 5 eggs in each brood.

How Long Do Aquatic Warbler Eggs Take To Hatch

Aquatic warbler eggs take around 12 to 14 days to hatch with the mother incubating them for the full term. The young are typically ready to leave the nest and fledge after around 9 or 10 days after hatching.

The male will help feed the young of his primary breeding partner but as male aquatic warblers tend to be promiscuous, any subsequent breeding partners are left to fend for themselves and their young.

What Colour Are Aquatic Warbler Eggs

Aquatic warbler eggs are brown and covered in dark brown or yellow/grey spots which helps them to blend in with the nest materials. This is probably to help protect the eggs from predators like shrews that also frequent the same areas where aquatic warblers make nests and rear their young.

The eggs are around 17 mm x 13 mm in size

Sadly aquatic warblers are also hunted by marsh harriers from above and shrews at ground level. Which means that very often a female aquatic warbler might lay 10 eggs, but she’ll be lucky to see around 6 or 7 of them reach maturity.

When Do Aquatic Warbler Chicks Open Their Eyes?

Aquatic Warbler

Like most birds, aquatic warblers are completely blind and naked when they first hatch. They open their eyes after around 5 days and grow feathers at the same time. 

They spend their first few days stretching their wings and legs to help develop the strong muscles needed for flying. 

When Do Aquatic Warbler Chicks Fledge?

The young chicks grow and develop pretty fast and somewhere between day 8 to day 12 they leave the nest or fledge. They still spend time with the female learning how to hunt for the food needed to sustain them.

Their diet consists mainly of insects and spiders which are typically found around the nesting ground. Aquatic warblers aren’t fussy, they will eat;

  • Flies
  • Beetles
  • Caterpillars
  • Moths
  • Grasshoppers
  • Crickets
  • Spiders
  • Worms
  • Snails
  • Slugs

They are also known to eat berries when other food sources are scarce.

Are Aquatic Warblers Monogamous?

Aquatic warblers are not monogamous, in fact, the opposite is true, they are promiscuous. They do not form long term relationships and both the males and females will mate with various partners throughout the breeding season.

In many cases, chicks from a single brood will often have been fertilised by different males.

SEE ALSO: Blue Tit vs Great Tit: Key Differences Explained

Frequently Asked Questions

What do aquatic warbler eggs look like?

Aquatic warbler eggs are brown in colour with darker brown or yellow/grey spots.

When do aquatic warbler eggs hatch?

Aquatic warbler eggs hatch around 12 to 14 days after being laid.

How many eggs does an aquatic warbler lay?

The female aquatic warbler will lay anywhere between 3 to 6 eggs. However, she will often lay a second clutch of eggs around 45 days after her first brood were laid.

How long does it take for aquatic warbler eggs to hatch?

Aquatic warbler eggs take around 12 to 14 days to hatch.

Leave a Reply

Your email address will not be published. Required fields are marked *