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The red grouse is considered a game bird and is shot in large numbers during the shooting season which traditionally starts on August 12, known as the Glorious Twelfth. There is a keen competition among some London restaurants to serve freshly killed grouse on August 12, with the birds being flown from the moors and cooked within hours.
Male iguanas, like other male examples of Squamata, have two hemipenes. During copulation, one hemipenis is inserted into the female's cloacal vent. [21] A female can store sperm from previous mates for several years to continue to fertilize her eggs in case she finds no male within her territory when she is ready to lay again. [22] [23] [24]
The phenotypic difference between males and females is called sexual dimorphism. [9] Male grouse tend to be larger than female grouse, [9] which seems to hold true across all the species of grouse, with some difference within each species in terms of how drastic the size difference is. [9]
Marine iguanas have sharp claws and are able to grip rock under seawater and eat seaweed, whereas land iguanas lack sharp claws, making them unable to climb the cacti that are their staple foods. Hybrid iguanas have sharp claws and can climb on cacti and also eat seaweed underwater. The hybrid iguana can survive in both sea and land environments.
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As in all iguanas, the tail comprises much of this length, and the snout-to-vent length of most green iguanas is 30 to 42 cm (12 to 17 in). A typical adult male weighs around 4 kg (8.8 lb) while the smaller adult female typically weighs 1.2 to 3 kg (2.6 to 6.6 lb).
Marine iguanas typically range from 12 to 56 cm (4.7–22.0 in) in snout-to-vent length and have a tail length from 17 to 84 cm (6.7–33.1 in). [8] [32] There are major geographical differences, as iguanas from large islands tend to grow relatively large as adults, while those from small islands are smaller in size. [21]
Notably, despite rhinoceros iguanas exhibiting some sexual dimorphism in size and horn development, they exhibit comparatively less sexual dimorphism than most other iguanas. Both male and female rhinoceros iguanas lack prominent mid-dorsal spines on their neck, which are typically very large in male iguanas of other species, both have well ...