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The tree swallow lays a clutch of two to eight, although usually four to seven, [14] pure white, and translucent at laying, eggs that measure about 19 by 14 mm (0.75 by 0.55 in). [53] These eggs are incubated by the female, [ 14 ] usually after the second-to-last egg is laid, [ 54 ] for 11 to 20 days, [ 53 ] although most hatch after 14 to 15 days.
A tree swallow attending its nest in a tree cavity. ... The size of the territory varies depending on the species of ... swallow eggs take 10–21 days to hatch, with ...
Tree swallow is a featured article; it (or a previous version of it) ... In the breeding section, the egg size is given as 19 by 14 centimetres. This is clearly ...
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When egg-laying, barn swallows hunt in pairs, but otherwise will form often large flocks. [7] The amount of food a clutch will get depends on the size of the clutch, with larger clutches getting more food on average. The timing of a clutch also determines the food given; later broods get food that is smaller in size compared to earlier broods.
The northern rough-winged swallow lays a single clutch, although sometimes another clutch is laid if the first one fails, [6] of four to eight [5] glossy white eggs that measure about 20 by 14 mm (0.79 by 0.55 in) on average. [12] It has been observed that the clutch size decreases with decreasing latitude. [5]
Nests are situated in tree forks or hollow stumps. Woodswallows are also known to recycle abandoned magpie-lark nests to use as their own. [10] The normal clutch size is between 2 and 5 eggs. These are tapered oval-shaped and cream or pinkish in color with darker brown speckles. The eggs are incubated for 15 days. [11]
The notch in the tail of the violet-green swallow is slightly shallower than that of the tree swallow, but deeper than the relatively flat tail of the cliff swallow. Female in California, U.S. Violet-green swallows exhibit very little sexual dimorphism, with adult males simply showing brighter colours than adult females. Additionally, the white ...