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The Hook Bill is a light duck, with an average weight of approximately 2 kg. [6]: 417 Three colour variants are recognised in France, the Netherlands and the United Kingdom: [8] the dusky mallard has a black head and rump with green lustre, the body in shades of grey with no white neck-ring, and a slate-grey beak; the white-bibbed dusky mallard is similarly coloured, but with a distinct white ...
It has a flattened, powerfully hooked, beak surrounded by deep chestnut rictal bristles up to 5 centimetres (2.0 in) long. The adult weighs 350–475 g (12.3–16.8 oz) but the chicks can weigh considerably more, at up to 600 grams (21 oz), when their parents feed them a good deal of fruit before they fly. [ 7 ]
As a passerine, or song bird, it has no talons. It has the hooked beak of a raptor. A 2010 study of mitochondrial DNA found that the northern shrike was most closely related to the Iberian grey shrike (Lanius meridionalis), the steppe grey shrike (Lanius pallidirostris), and the two formed a clade along with the Chinese grey shrike and ...
The beak is short, black, and hooked, and contains a tomial tooth to help tear into prey. [12] It is difficult to sex an adult loggerhead shrike in the field as they are sexually monochromatic. [18] However, several studies have reported sexual dimorphism in plumage and size traits.
The lammergeier (Gypaetus barbatus) is an aberrant cousin of the Old World vultures that has maintained strong feet that it uses to carry and drop large bones in order to crack them open to feed on bone marrow, their primary food, a technique they also sometimes use for live prey items, like tortoises. [21]
About 22 countries around the world use nets to collect water from the air, so such a boost in efficiency could have a big impact. Image credits: Shea Gunther #28 Anti-Counterfeiting Money Technology
Today's Connections Game Answers for Monday, February 24, 2025: 1. EAT VORACIOUSLY: GOBBLE, GULP, SCARF, WOLF 2. BEND UNDER PRESSURE: BOW, BUCKLE, CAVE, GIVE 3 ...
The largest species are discussed below. Like all birds of prey, eagles have very large hooked beaks for ripping flesh from their prey, strong, muscular legs, and powerful talons. The beak is typically heavier than that of most other birds of prey. Eagles' eyes are extremely powerful.