Birds migrate along ancient routes – here are the latest Most birds migrate at night, and many give a species-specific “chit,” “zeep” or other call-note while in flight The calls may serve to keep migrating flocks together, including different
Wildlife Trust of India - World Land Trust Kannur’s mangroves are known to harbour more than 170 bird species, 110 fish species, 13 mammal species – including the Smooth-coated Otter (Vulnerable) – and two species of edible clam that are important for the local economy
White-chinned swift - Wikipedia The white-chinned swift is monotypic [2] Some authors consider it and the white-fronted swift (Cypseloides storeri) to form a superspecies Others consider it more closely related to the sooty swift (C fumigatus) and Rothschild's swift (C rothschildi) or that all three of them are a single species
27 Species of Birds That Start With W (Pictures) - Bird . . . image: Danielle Brigida | Flickr | CC 2 0 Scientific name: Aix sponsa There was a serious decline in the number of these birds during the 19th century The Wood duck was hunted for its meat as well as plumage, which was used to make hats for the European market
Sexual dimorphism - Wikipedia The eclectus parrot is an example of a bird where the female (right) is more colorful than the male (left) Migratory patterns and behaviors also influence sexual dimorphisms This aspect also stems back to size dimorphism in species
How Many Species of Birds Are There? - WorldAtlas However, recent revelations doubled this number to an estimated 18,000 species, with a possibility of more species being discovered in the future Birds are generally very mobile, migratory, and live in many regions including under explored For this reason, bird researchers believe that there are more bird species to be discovered
Wallcreeper - Wikipedia More recently, it was placed in its own monotypic family, Tichodromadidae, by Karel Voous in the influential List of Recent Holarctic Bird Species, [4] while other authorities such as Charles Vaurie put it in a monotypic family called Tichodromadinae, as a subfamily of the nuthatch family Sittidae [5]