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The female lays two to four eggs within a month and relies on the size of the nest to conserve heat. The eggs are whitish with bold splotches of reddish-brown and are about 6.2 cm × 4.5 cm (2.4 in × 1.8 in) and weigh about 65 g (2.3 oz). [51] The eggs are incubated for about 35–43 days to hatching. [57]
The clutch size is usually two to three eggs, sometimes up to four, and are able to brood twice in a season. [16] These are laid within a month, and relies on the size of the nest to conserve heat. The egg shell is white or buff with bold splotches and spots of reddish-brown, sometimes so dark as to be black; purple or grey blotches may appear ...
After a long winter, ospreys are on their way back to New Jersey for breeding season. Ospreys, or fish hawks, are one of the state's largest raptors.
Nest cavities have to be quite large in order to accommodate these birds. Clutch size is 1 to 3, usually 2. [23] In Russia, clutches are usually just one egg. [23] Eggs are 6.2 cm (2.4 in) long and 4.9 cm (1.9 in) wide and are thus similar in size to Siberian eagle-owl eggs. The males provide food for the incubating female and later the nestlings.
The bird coded NC0 laid the latest egg at the Loch of the Lowes wildlife reserve near Dunkeld at around 7.40am on Saturday. Female osprey lays third egg of the season at loch reserve Skip to main ...
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Nesting may occur from March to May. Unlike, for example, osprey or white storks, the great grey owl does not predictably re-use nest sites over consecutive years. Four eggs are the usual clutch size. Eggs average 42.7 mm (1.68 in) wide and 53.5 mm (2.11 in) long. The incubation period is about 30 days, ranging from 28 to 36 days.
In 2023, the state had a record of 267 nesting pairs, 255 of which laid eggs. ... ospreys were heavily affected by DDT with the number of osprey nests falling to around 50 in the early 1970s.