Trap Door traps are humane box traps with a spring-loaded lid and feeding platform. The trap attracts target birds to feed and is triggered when the bird steps on a perch. The trap then drops the bird via gravity into a quiet, comfortable space until they are ready for live removal and relocation. There is no stress to the bird – no part of the trap makes contact nor does a human touch. These traps offer flexibility in bait and attraction techniques, can be outfitted with an internal catch bag for bird removal, and some include a means to send a notification to a phone or remote operator that a bird has been captured. Trap door traps are most often used for relocating small birds that have entered public buildings and structures such as warehouses, atrium and airport terminals. Clap traps Clap traps are spring-loaded frames with netting that are set up in two parts that come together rapidly when triggered by birds or manually controlled to enclose birds. They are usually used for ground birds but some variants are used in shallow water for the capture of waterfowl. Clap traps may be placed at a location habitually used by birds or can include luring devices. Funnel traps/corral traps Funnel traps have a narrow entrance into which birds may be lured or driven and the entrance typically leads to larger holding pen or corral (which also gives them the name of corral trap). Funnel traps can be very large and a particularly well-known large scale form was devised in the German bird observatory at Heligoland and are termed as a Heligoland trap. Cannon nets Flocking birds are sometimes trapped using a large net which is thrown using a series of synchronized cannons or rockets that shoot a weight that drags a net behind it over the entire flock. These nets are also called rocket nets or boom nets. Capturing entire flocks can be an important tool for studies where large numbers of birds need to be examined (such as when monitoring for viruses) or when the birds are gregarious and social. These techniques are used especially in open habitats and are particularly suited for waders and waterbirds. After examination, ringing or other operations, the captured birds are usually released together rather than individually. Mist nets Mist nets are fine nets that are suitable for capturing birds in woodlands. The fine